Cognizant Technology Solutions (CTSH) 10-K 25 Feb 16 2015 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2015	Feb. 19, 2016	Jun. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
Trading Symbol	CTSH
Entity Registrant Name	COGNIZANT TECHNOLOGY SOLUTIONS CORP
Entity Central Index Key	1,058,290
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		609,120,446
Entity Well-known Seasoned Issuer	Yes
Entity Public Float			$ 37
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No

Consolidated Statements Of Fina

Consolidated Statements Of Financial Position - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents	$ 2,125.2	$ 2,010.1
Short-term investments	2,824.3	1,764.6
Trade accounts receivable, net of allowances of $39.0 and $36.9, respectively	2,252.6	1,968.7
Unbilled accounts receivable	369	324.6
Other current assets	337.5	352.6
Total current assets	7,908.6	6,420.6
Property and equipment, net	1,271.4	1,247.2
Goodwill	2,404.7	2,413.6
Intangible assets, net	864.3	953.7
Deferred income tax assets, net	347.8	234.2
Other noncurrent assets	268.6	209.7
Total assets	13,065.4	11,479
Liabilities and Stockholders' Equity
Accounts payable	165.3	145.7
Deferred revenue	323.7	224.1
Short-term debt	406.3	700
Accrued expenses and other current liabilities	1,818.4	1,522.3
Total current liabilities	2,713.7	2,592.1
Deferred revenue, noncurrent	49.3	81
Deferred income tax liabilities, net	3.3	11.8
Long-term debt	881.2	937.5
Other noncurrent liabilities	139.8	116.4
Total liabilities	$ 3,787.3	$ 3,738.8
Commitments and contingencies (See Note 12)
Stockholders' Equity:
Preferred stock, $0.10 par value, 15.0 shares authorized, none issued	$ 0	$ 0
Class A common stock, $0.01 par value, 1,000.0 shares authorized, 609.0 and 609.4 shares issued and outstanding at December 31, 2015 and December 31, 2014, respectively	6.1	6.1
Additional paid-in capital	453	555.6
Retained earnings	8,925.2	7,301.6
Accumulated other comprehensive income (loss)	(106.2)	(123.1)
Total stockholders’ equity	9,278.1	7,740.2
Total liabilities and stockholders’ equity	$ 13,065.4	$ 11,479

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Financial Position (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Trade accounts receivable, allowances	$ 39	$ 36.9
Preferred stock, par value	$ 0.10	$ 0.10
Preferred stock, shares authorized	15,000,000	15,000,000
Preferred stock, issued	0	0
Class A common stock, par value	$ 0.01	$ 0.01
Class A common stock, shares authorized	1,000,000,000	1,000,000,000
Class A common stock, shares issued	609,000,000	609,400,000
Class A common stock, shares outstanding	609,000,000	609,400,000

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Revenues	$ 12,416	$ 10,262.7	$ 8,843.2
Operating expenses:
Cost of revenues (exclusive of depreciation and amortization expense shown separately below)	7,440.2	6,141.1	5,265.5
Selling, general and administrative expenses	2,508.6	2,037	1,727.6
Depreciation and amortization expense	325.2	199.7	172.2
Income from operations	2,142	1,884.9	1,677.9
Other income (expense), net:
Interest income	83.7	62.4	48.9
Interest expense	(17.7)	(2.5)	0
Foreign currency exchange gains (losses), net	(42.6)	(20.4)	(41.1)
Other, net	(1.8)	(0.4)	2.2
Total other income (expense), net	21.6	39.1	10
Income before provision for income taxes	2,163.6	1,924	1,687.9
Provision for income taxes	540	484.7	459.3
Net income	$ 1,623.6	$ 1,439.3	$ 1,228.6
Basic earnings per share	$ 2.67	$ 2.37	$ 2.03
Diluted earnings per share	$ 2.65	$ 2.35	$ 2.02
Weighted average number of common shares outstanding—Basic	609.1	608.1	604
Dilutive effect of shares issuable under stock-based compensation plans	4.2	4.4	5.7
Weighted average number of common shares outstanding—Diluted	613.3	612.5	609.7

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 1,623.6	$ 1,439.3	$ 1,228.6
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(55.1)	(58.8)	12.5
Change in unrealized losses on cash flow hedges, net of taxes	75	213.3	(47.2)
Change in unrealized losses on available-for-sale investment securities, net of taxes	(3)	(1.3)	(1.9)
Other comprehensive income (loss)	16.9	153.2	(36.6)
Comprehensive income	$ 1,640.5	$ 1,592.5	$ 1,192

Consolidated Statements Of Stoc

Consolidated Statements Of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2012	$ 4,854.4	$ 6	$ 454.4	$ 4,633.7	$ (239.7)
Beginning balance, shares at Dec. 31, 2012		603.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,228.6			1,228.6
Other comprehensive (loss)	(36.6)				(36.6)
Common stock issued, stock-based compensation plans and other	117.5	$ 0.1	117.4
Common stock issued, stock based compensation plans and other, shares		9.6
Tax benefit, stock-based compensation plans	32.1		32.1
Stock-based compensation expense	118.8		118.8
Repurchases of common stock	(179)	$ 0	(179)
Repurchases of common stock, shares		(5.3)
Ending balance at Dec. 31, 2013	6,135.8	$ 6.1	543.7	5,862.3	(276.3)
Ending balance, shares at Dec. 31, 2013		607.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,439.3			1,439.3
Other comprehensive (loss)	153.2				153.2
Common stock issued, stock-based compensation plans and other	101.4	$ 0.1	101.3
Common stock issued, stock based compensation plans and other, shares		6.7
Tax benefit, stock-based compensation plans	24		24
Stock-based compensation expense	134.8		134.8
Repurchases of common stock	(248.3)	$ (0.1)	(248.2)
Repurchases of common stock, shares		(5)
Ending balance at Dec. 31, 2014	$ 7,740.2	$ 6.1	555.6	7,301.6	(123.1)
Ending balance, shares at Dec. 31, 2014	609.4	609.4
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 1,623.6			1,623.6
Other comprehensive (loss)	16.9				16.9
Common stock issued, stock-based compensation plans and other	131.6	$ 0.1	131.5
Common stock issued, stock based compensation plans and other, shares		6.9
Tax benefit, stock-based compensation plans	33.8		33.8
Stock-based compensation expense	192		192
Repurchases of common stock	(460)	$ (0.1)	(459.9)
Repurchases of common stock, shares		(7.3)
Ending balance at Dec. 31, 2015	$ 9,278.1	$ 6.1	$ 453	$ 8,925.2	$ (106.2)
Ending balance, shares at Dec. 31, 2015	609	609

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income	$ 1,623.6	$ 1,439.3	$ 1,228.6
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	330	208.1	179.9
Provision for doubtful accounts	10.2	4.7	3.6
Deferred income taxes	(126.1)	(99.6)	(88.2)
Stock-based compensation expense	192	134.8	118.8
Excess tax benefits on stock-based compensation plans	(33.7)	(23.6)	(30.6)
Other	48.6	30.3	52.6
Changes in assets and liabilities:
Trade accounts receivable	(322.4)	(259.3)	(258.5)
Other current assets	(32.5)	(118.6)	(74.7)
Other noncurrent assets	(38.6)	19.1	(24.3)
Accounts payable	19.4	25.7	(12.1)
Deferred revenues, current and noncurrent	49.7	70.6	15.2
Other current and noncurrent liabilities	433.1	41.5	313.5
Net cash provided by operating activities	2,153.3	1,473	1,423.8
Cash flows from investing activities:
Purchases of property and equipment	(272.8)	(212.2)	(261.6)
Purchases of investments	(3,003.7)	(2,497.3)	(1,848.8)
Proceeds from maturity or sale of investments	1,907.6	2,240.2	1,573.4
Business combinations, net of cash acquired	(1.7)	(2,691.4)	(193.8)
Net cash (used in) investing activities	(1,370.6)	(3,160.7)	(730.8)
Cash flows from financing activities:
Issuance of common stock under stock-based compensation plans	131.6	101.4	117.5
Excess tax benefits on stock-based compensation plans	33.7	23.6	30.6
Repurchases of common stock	(460)	(248.3)	(179)
Proceeds from term loan borrowings	0	1,000	0
Debt issuance costs	0	(9.1)	0
Repayment of term loan borrowings and capital lease obligations	(53.4)	(14.2)	0
Net change in notes outstanding under the revolving credit facility	(300)	650	0
Net cash (used in) provided by financing activities	(648.1)	1,503.4	(30.9)
Effect of exchange rate changes on cash and cash equivalents	(19.5)	(18.6)	(19.2)
Increase (decrease) in cash and cash equivalents	115.1	(202.9)	642.9
Cash and cash equivalents, beginning of year	2,010.1	2,213	1,570.1
Cash and cash equivalents, end of period	2,125.2	2,010.1	2,213
Supplemental information:
Cash paid for income taxes during the year	578.6	558.6	481
Cash interest paid during the year	$ 14.4	$ 0.1	$ 0

Business Description and Summar

Business Description and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Business Description and Summary of Significant Accounting Policies	Business Description and Summary of Significant Accounting Policies The terms “Cognizant,” “we,” “our,” “us” and “the Company” refer to Cognizant Technology Solutions Corporation and its subsidiaries unless the context indicates otherwise. Description of Business. We are a leading provider of information technology (IT), consulting and business process services, dedicated to helping the world’s leading companies build stronger businesses. Our clients engage us to help them operate more efficiently, provide solutions to critical business and technology problems, and help them drive technology-based innovation and growth. Our core competencies include: business, process, operations and IT consulting, application development and systems integration, enterprise information management, application testing, application maintenance, infrastructure services, and business process services. We tailor our services to specific industries and utilize an integrated global delivery model. This seamless global sourcing model combines industry-specific expertise, client service teams based on-site at the client locations and delivery teams located at dedicated near-shore and offshore global delivery centers. Basis of Presentation and Principles of Consolidation . The consolidated financial statements are presented in accordance with generally accepted accounting principles in the United States of America, or U.S. GAAP, and reflect the consolidated financial position, results of operations, comprehensive income and cash flows of our consolidated subsidiaries for all periods presented. All intercompany balances and transactions have been eliminated in consolidation. Cash and Cash Equivalents and Investments. Cash and cash equivalents consist of all cash balances, including money market funds and liquid instruments. Liquid instruments are classified as cash equivalents when their maturities at the date of purchase are three months or less and as short-term investments when their maturities at the date of purchase are greater than three months. We determine the appropriate classification of our investments in marketable securities at the date of purchase and reevaluate such designation at each balance sheet date. We have classified and accounted for our marketable securities as available-for-sale. After consideration of our risk versus reward objectives, as well as our liquidity requirements, we may sell these securities prior to their stated maturities. As we view these marketable securities as available to support current operations, we classify such securities with maturities at the date of purchase beyond twelve months as short-term investments because such investments represent an investment in cash that is available for current operations. Available-for-sale securities are reported at fair value with changes in unrealized gains and losses recorded as a separate component of accumulated other comprehensive income (loss) until realized. We determine the cost of the securities sold based on the specific identification method. Time deposits with financial institutions are valued at cost, which approximates fair value. Interest and amortization of premiums and discounts for debt securities are included in interest income. We also evaluate our available-for-sale investments periodically for possible other-than-temporary impairment by reviewing factors such as the length of time and extent to which fair value has been below cost basis, the financial condition of the issuer, whether we intend to sell the security and whether it is more likely than not that we will be required to sell the security prior to recovery of its amortized cost basis. Once a decline in fair value is determined to be other-than-temporary, an impairment charge is generally recorded to income and a new cost basis in the investment is established. Allowance for Doubtful Accounts. We maintain an allowance for doubtful accounts for estimated losses resulting from the inability of our customers to make required payments. The allowance for doubtful accounts is determined by evaluating the relative credit-worthiness of each customer, historical collections experience and other information, including the aging of the receivables. We evaluate the collectibility of our accounts receivable on an on-going basis and write-off accounts when they are deemed to be uncollectible. Unbilled Accounts Receivable. Unbilled accounts receivable represent revenues recognized on contracts to be billed, in subsequent periods, as per the terms of the related contracts. Short-term Financial Assets and Liabilities. Cash and certain cash equivalents, trade receivables, accounts payable and other accrued liabilities are short-term in nature and, accordingly, their carrying values approximate fair value. Property and Equipment . Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is calculated on a straight-line basis over the estimated useful lives of the assets. Leasehold improvements are amortized on a straight-line basis over the shorter of the term of the lease or the estimated useful life of the improvement. In India, leasehold land is leased by us from the government of India with lease terms ranging up to 99 years . Lease payments are made at the inception of the lease agreement and amortized over the lease term. Maintenance and repairs are expensed as incurred, while renewals and betterments are capitalized. Deposits paid towards acquisition of long-lived assets and the cost of assets not put in use before the balance sheet date are disclosed under the caption “capital work-in-progress” in Note 4. Internal Use Software . We capitalize certain costs that are incurred to purchase, develop and implement internal-use software during the application development phase, which primarily include coding, testing and certain data conversion activities. Capitalized costs are amortized on a straight-line basis over the useful life of the software. Costs incurred in performing activities associated with the preliminary project phase and the post-implementation phase are expensed as incurred. Business Combinations . We account for business combinations using the acquisition method, which requires the identification of the acquirer, the determination of the acquisition date and the allocation of the purchase price paid by the acquirer to the identifiable tangible and intangible assets acquired, the liabilities assumed and any noncontrolling interest in the acquiree at their acquisition date fair values. Goodwill represents the excess of the purchase price over the fair value of net assets acquired, including the amount assigned to identifiable intangible assets. Identifiable intangible assets with finite lives are amortized over their useful lives. Acquisition-related costs are expensed in the periods in which the costs are incurred. The results of operations of acquired businesses are included in our consolidated financial statements from the acquisition date . Long-lived Assets and Finite-lived Intangibles . We review long-lived assets and certain finite-lived identifiable intangibles for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. We recognize an impairment loss when the sum of undiscounted expected future cash flows is less than the carrying amount of such assets. The impairment loss would equal the amount by which the carrying amount of the asset exceeds the fair value of the asset. Intangible assets consist primarily of customer relationships and developed technology, which are being amortized on a straight-line basis over their estimated useful lives. Goodwill and Indefinite-lived Intangibles . We evaluate goodwill and indefinite-lived intangible assets for impairment at least annually, or as circumstances warrant. Goodwill is evaluated at the reporting unit level by comparing the fair value of the reporting unit with its carrying amount. For indefinite-lived intangible assets, if our annual qualitative assessment indicates possible impairment, we test the assets for impairment by comparing the fair value of such assets to their carrying value. In determining the fair value, we utilize various estimates and assumptions, including discount rates and projections of future cash flows. If an impairment is indicated, a write down to the implied fair value of goodwill or fair value of indefinite-lived intangible asset is recorded. Stock Repurchase Program. Our existing stock repurchase program, as amended and approved by our Board of Directors, allows for the repurchase of $2,000.0 million of our outstanding shares of Class A common stock and expires on December 31, 2017. Through December 31, 2015 , we completed stock repurchases of 41.2 million shares for $1,562.4 million, inclusive of fees and expenses, under this program. During 2015 , 2014 and 2013 , we repurchased 6.0 million , 3.8 million and 4.1 million shares respectively, at an aggregate cost of $376.0 million , $188.2 million and $131.6 million, respectively. Additional stock repurchases were made in connection with our stock-based compensation plans, whereby Company shares were tendered by employees for payment of applicable statutory tax withholdings. During 2015 , 2014 and 2013 such repurchases totaled 1.3 million, 1.2 million and 1.2 million shares, respectively, at an aggregate cost of $84.0 million, $60.1 million and $47.4 million, respectively. At the time of repurchase, shares are returned to the status of authorized and unissued shares. We account for the repurchases as constructively retired and record such repurchases as a reduction of Class A common stock and additional paid-in capital. Revenue Recognition . Revenues related to time-and-material contracts are recognized as the service is performed and amounts are earned. Revenues from transaction-priced contracts are recognized as transactions are processed and amounts are earned. Revenues related to fixed-price contracts for highly complex application development and systems integration services are recognized as the service is performed using the percentage of completion method of accounting, under which the total value of revenue is recognized on the basis of the percentage that each contract’s total labor cost to date bears to the total expected labor costs (cost to cost method). Revenues related to fixed price outsourcing services are recognized on a straight-line basis unless revenues are earned and obligations are fulfilled in a different pattern. Revenues related to fixed-price contracts for consulting or other IT services are recognized as services are performed on a proportional performance basis based upon the level of effort. For all services, revenue is earned and recognized only when all of the following criteria are met: evidence of an arrangement exists, the price is fixed or determinable, the services have been rendered and collectibility is reasonably assured. Contingent or incentive revenues are recognized when the contingency is satisfied and we conclude the amounts are earned. Volume discounts are recorded as a reduction of revenue over the contract period as services are provided. Revenues also include the reimbursement of out-of-pocket expenses. Costs to deliver services are expensed as incurred with the exception of specific costs directly related to transition or set-up activities for outsourcing contracts. Transition costs are deferred and expensed ratably over the period of service. Generally, deferred amounts are protected by collected cash or early termination penalty clauses and are monitored regularly for impairment. Impairment losses are recorded when projected remaining undiscounted operating cash flows of the related contract are not sufficient to recover the carrying amount of the contract assets. Deferred transition costs were approximately $ 137.4 million and $ 98.2 million as of December 31, 2015 and 2014 , respectively, and are included in other noncurrent assets in our consolidated statements of financial position. Costs related to warranty provisions are accrued at the time the related revenues are recorded. We may enter into arrangements that consist of multiple elements. Such arrangements may include any combination of our consulting and technology services and outsourcing services. For arrangements with multiple deliverables, we evaluate at the inception of each new arrangement all deliverables to determine whether they represent separate units of accounting. For arrangements with multiple units of accounting, other than arrangements that contain software licenses and software-related services, we allocate consideration among the units of accounting, where separable, based on their relative selling price. Relative selling price is determined based on vendor-specific objective evidence, or VSOE, if it exists. Otherwise, third-party evidence of selling price is used, when it is available, and in circumstances when neither VSOE nor third-party evidence of selling price is available, management’s best estimate of selling price is used. Revenue is recognized for each unit of accounting based on our revenue recognition policy described above. Fixed-price contracts are generally cancelable subject to a specified notice period. All services provided by us through the date of cancellation are due and payable under the contract terms. We issue invoices related to fixed-price contracts based upon achievement of milestones during a project or other contractual terms. Differences between the timing of billing, based on contract milestones or other contractual terms, and the recognition of revenue are recognized as either unbilled receivables or deferred revenue. Estimates of certain fixed-price contracts are subject to adjustment as a project progresses to reflect changes in expected completion costs or efforts. The cumulative impact of any revision in estimates is reflected in the financial reporting period in which the change in estimate becomes known and any anticipated losses on contracts are recognized immediately. We also generate product revenue from licensing our software. For perpetual software license arrangements that do not require significant modification or customization of the underlying software, revenue is recognized when the software is delivered and all other software revenue recognition criteria are met. For software license arrangements that require significant functionality enhancements or modification of the software, revenue for the software license and those services is recognized as those services are performed. For software license arrangements that include a right to use the product for a defined period of time, we recognize revenue ratably over the term of the license. We may enter into arrangements with customers that purchase both software licenses and software-related services from us at the same time, or within close proximity of one another (referred to as software-related multiple-element arrangements). Such software related multiple-element arrangements may include software licenses, software license updates, product support contracts and other software-related services. For those software related multiple-element arrangements, we apply the residual method to determine the amount of software license revenue. Under the residual method, if VSOE of fair value exists for undelivered elements in a multiple-element arrangement, revenue equal to the fair value of the undelivered elements is deferred with the remaining portion of the arrangement consideration generally recognized upon delivery of the software license. For arrangements in which VSOE of fair value does not exist for each software-related undelivered element, revenue for the software license is deferred and not recognized until VSOE of fair value is available for the undelivered element or delivery of each element has occurred. If the only undelivered element is a service, revenue from the delivered element is recognized over the service period. We also enter into multiple-element arrangements that may include a combination of software licenses and various software-related and non-software-related services. In such arrangements, we first allocate the total arrangement consideration, based on relative selling prices, between the software group of elements and the non-software group of elements. We then further allocate consideration within the software group to the respective elements within that group following the software-related multiple-element arrangements policies described above. For the non-software group of elements, we further allocate consideration to the respective elements based on relative selling prices. After the arrangement consideration has been allocated to the individual elements, we account for each respective element in the arrangement as described above. Stock-Based Compensation. Stock-based compensation expense for awards of equity instruments to employees and non-employee directors is determined based on the grant-date fair value of those awards. We recognize these compensation costs net of an estimated forfeiture rate over the requisite service period of the award. Forfeitures are estimated on the date of grant and revised if actual or expected forfeiture activity differs materially from original estimates. Foreign Currency . The assets and liabilities of our foreign subsidiaries whose functional currency is not the U.S. dollar are translated into U.S. dollars from local currencies at current exchange rates and revenues and expenses are translated from local currencies at average monthly exchange rates. The resulting translation adjustments are recorded in accumulated other comprehensive income (loss) on the accompanying consolidated statements of financial position. Foreign currency transactions and balances are those that are denominated in a currency other than the subsidiary’s functional currency. The U.S. dollar is the functional currency for certain foreign subsidiaries who conduct business predominantly in U.S. dollars. For these subsidiaries, transactions and balances denominated in the local currency are foreign currency transactions. Foreign currency transactions and balances related to non-monetary assets and liabilities are remeasured to the functional currency of the subsidiary at historical exchange rates while monetary assets and liabilities are remeasured to the functional currency of the subsidiary at current exchange rates. Foreign currency exchange gains or losses from remeasurement are included in the "Foreign currency exchange gain (losses), net" line on our consolidated statement of operations together with gains or losses on our undesignated foreign currency hedges. Derivative Financial Instruments. Derivative financial instruments are accounted for in accordance with the authoritative guidance which requires that each derivative instrument be recorded on the balance sheet as either an asset or liability measured at its fair value as of the reporting date. Our derivative financial instruments consist of foreign exchange forward contracts. For derivative financial instruments to qualify for hedge accounting, the following criteria must be met: (1) the hedging instrument must be designated as a hedge; (2) the hedged exposure must be specifically identifiable and must expose us to risk; and (3) it is expected that a change in fair value of the derivative financial instrument and an opposite change in the fair value of the hedged exposure will have a high degree of correlation. The authoritative guidance requires that changes in our derivatives’ fair values be recognized in income unless specific hedge accounting and documentation criteria are met (i.e., the instruments are accounted for as hedges). We record the effective portion of the unrealized gains and losses on our derivative financial instruments that are designated as cash flow hedges in accumulated other comprehensive income (loss) in the accompanying consolidated statements of financial position. Any ineffectiveness or excluded portion of a designated cash flow hedge is recognized in income. Upon settlement or maturity of the cash flow hedge contracts, the realized gains and losses are recognized in income. Use of Estimates . The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, including the recoverability of tangible and intangible assets, disclosure of contingent assets and liabilities as of the date of the financial statements, and the reported amounts of revenues and expenses during the period. The most significant estimates relate to the recognition of revenue and profits based on the percentage of completion method of accounting for certain fixed-bid contracts, the allowance for doubtful accounts, income taxes, assumptions used in valuing stock-based compensation arrangements, valuation of derivative financial instruments and investments, business combinations, intangible assets and other long-lived assets, valuation of goodwill, contingencies and litigation. We evaluate our estimates on a continuous basis. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. The actual amounts may vary from the estimates used in the preparation of the accompanying consolidated financial statements. Risks and Uncertainties . The majority of our development and delivery centers and employees are located in India. As a result, we may be subject to certain risks associated with international operations, including risks associated with foreign currency exchange rate fluctuations and risks associated with the application and imposition of protective legislation and regulations relating to import and export or otherwise resulting from foreign policy or the variability of foreign economic or political conditions. Additional risks associated with international operations include difficulties in enforcing intellectual property rights, the burdens of complying with a wide variety of foreign laws, potential geo-political and other risks associated with terrorist activities and local or cross border conflicts and potentially adverse tax consequences, tariffs, quotas and other barriers. Concentration of Credit Risk . Financial instruments that potentially subject us to significant concentrations of credit risk consist primarily of cash and cash equivalents, time deposits, investments in securities, derivative financial instruments and billed and unbilled accounts receivable. We maintain our cash and cash equivalents, investments and derivative financial instruments with high credit quality financial institutions, invest in investment-grade debt securities and limit the amount of credit exposure to any one commercial issuer. Our accounts receivable are dispersed across many customers operating in different industries; therefore, concentration of credit risk is limited. Income Taxes. We provide for income taxes utilizing the asset and liability method of accounting. Under this method, deferred income taxes are recorded to reflect the tax consequences in future years of differences between the tax basis of assets and liabilities and their financial reporting amounts at each balance sheet date, based on enacted tax laws and statutory tax rates applicable to the periods in which the differences are expected to affect taxable income. If it is determined that it is more likely than not that future tax benefits associated with a deferred income tax asset will not be realized, a valuation allowance is provided. The effect on deferred income tax assets and liabilities of a change in the tax rates is recognized in income in the period that includes the enactment date. Tax benefits earned on exercise of employee stock options in excess of compensation charged to income are credited to additional paid-in capital. Our provision for income taxes also includes the impact of provisions established for uncertain income tax positions, as well as the related interest. Earnings Per Share, or EPS. Basic EPS excludes dilution and is computed by dividing earnings available to common stockholders by the weighted-average number of common shares outstanding for the period. Diluted EPS includes all potential dilutive common stock in the weighted average shares outstanding. For purposes of computing diluted earnings per share for the years ended December 31, 2015 , 2014 and 2013 , respectively, 4.2 million, 4.4 million and 5.7 million shares were assumed to have been outstanding related to common share equivalents. We exclude from the calculation of diluted EPS options with exercise prices that are greater than the average market price and shares related to stock-based awards whose combined exercise price, unamortized fair value and excess tax benefits were greater in each of those periods than the average market price of our common stock for the period, because their effect would be anti-dilutive. We excluded 0.1 million of anti-dilutive shares in 2015 , 2014 and 2013 from our diluted EPS calculation. We include performance stock unit awards in the dilutive potential common shares when they become contingently issuable per the authoritative guidance and exclude the awards when they are not contingently issuable. Recently Adopted Accounting Pronouncement. In November 2015, the Financial Accounting Standards Board, or FASB, issued an update to the standard on income taxes pertaining to the balance sheet classification of deferred income taxes. The update requires that all deferred income tax assets and liabilities, along with any related valuation allowance, within each tax jurisdiction be classified as noncurrent on the balance sheet. As a result, each tax jurisdiction will only have one net noncurrent deferred income tax asset or liability. This guidance is effective on either a prospective or retrospective basis for fiscal years, and interim periods within those years, beginning on or after January 1, 2017 with early adoption permitted. We elected to early adopt this guidance retrospectively in the fourth quarter of 2015. We conformed prior years' presentation to current year's presentation on our consolidated statement of financial position. There is no impact on our consolidated statement of operations. New Accounting Pronouncements. In May 2014, the FASB issued a standard on revenue from contracts with customers. The new standard sets forth a single comprehensive model for recognizing and reporting revenue. The standard also requires additional financial statement disclosures that will enable users to understand the nature, amount, timing and uncertainty of revenue and cash flows relating to customer contracts. In July 2015, the FASB deferred the effective date of the standard by one year to periods beginning on or after January 1, 2018. Early adoption is permitted but not before the original effective date of periods beginning on or after January 1, 2017. The standard allows for two methods of adoption: the full retrospective adoption, which requires the standard to be applied to each prior period presented, or the modified retrospective adoption, which requires the cumulative effect of adoption to be recognized as an adjustment to opening retained earnings in the period of adoption. We are currently evaluating the effect the new standard will have on our consolidated financial statements and related disclosures. In April 2015, the FASB issued an update to the standard on interest related to the presentation of debt issuance costs. The standard requires debt issuance costs, other than costs incurred to secure lines of credit, be presented in the balance sheet as a direct deduction from the carrying value of that debt liability. The recognition and measurement guidance for debt issuance costs are not affected by this standard. The standard is effective on a retrospective basis for fiscal years, and interim periods within those years, beginning on or after January 1, 2016. The adoption of this standard will affect financial statement presentation only and will have no effect on our financial condition or results of operations. In April 2015, the FASB issued an update to the standard on internal-use software providing guidance to customers in evaluating whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the standard requires the customer to account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer is required to account for the arrangement as a service contract. The standard is effective for fiscal years, and interim periods within those years, beginning on or after January 1, 2016. A company can elect to adopt the amendments either prospectively to all arrangements entered into or materially modified after the effective date or retrospectively. We plan to adopt the amendments to this standard prospectively beginning January 1, 2016. We do not expect the adoption of this amendment to have a material effect on our financial condition or results of operations. In January 2016, the FASB issued an update to the standard on financial instruments. The update significantly revises an entity’s accounting related to (1) the classification and measurement of investments in equity securities and (2) the presentation of certain fair value changes for financial liabilities measured at fair value. It also amends certain disclosure requirements. The update is effective for fiscal years, and interim periods within those fiscal years, beginning on or after January 1, 2018. Upon adoption, entities will be required to make a cumulative-effect adjustment to the statement of financial position as of the beginning of the first reporting period in which the guidance is effective. However, the specific guidance on equity securities without readily determinable fair value will apply prospectively to all equity investments that exist as of the date of adoption. Early adoption of certain sections of this update is permitted. We are currently evaluating the effect the new standard will have on our consolidated financial statements and related disclosures.

Business Combinations

Business Combinations	12 Months Ended
	Dec. 31, 2015
Business Combinations [Abstract]
Business Combinations	Business Combinations 2015: We did not complete any material business combinations in 2015. 2014 TriZetto acquisition: On November 20, 2014, we completed the acquisition of TZ US Parent, Inc. ("TriZetto"), a private U.S. healthcare information technology company for an aggregate purchase price, after giving effect to various purchase price adjustments, of approximately $2,627.8 million (net of cash acquired of $170.5 million). The TriZetto acquisition positioned Cognizant to better serve a wider cross-section of clients with an integrated solution set, combining technology with our healthcare services business. In connection with the acquisition of TriZetto, we entered into a credit agreement with a commercial bank syndicate providing for a $1,000.0 million unsecured term loan and a $750.0 million unsecured revolving credit facility. The term loan was used to pay a portion of the cash consideration in connection with the TriZetto acquisition. Our allocation of purchase price as of November 20, 2014 (the closing date of the TriZetto acquisition) to the fair value of assets acquired and liabilities assumed was as follows: Amount (in millions) Cash $ 170.5 Trade accounts receivable 83.1 Unbilled accounts receivable 32.5 Other current assets 11.2 Property and equipment 124.0 Identifiable intangible assets 849.0 Other noncurrent assets 14.8 Accounts payable (12.5 ) Deferred revenue (48.3 ) Accrued expenses and other current liabilities (118.3 ) Other noncurrent liabilities (54.8 ) Deferred income tax liabilities, net (209.0 ) Goodwill 1,956.1 Total purchase price $ 2,798.3 We allocated the purchase price to the identifiable assets acquired and liabilities assumed based on their fair values. The excess of purchase price over the estimated fair value of the underlying assets acquired and liabilities assumed was allocated to goodwill. Such goodwill principally represents the value of synergies expected to be realized between Cognizant and TriZetto and the acquired assembled workforce, neither of which qualify as a separate amortizable intangible asset. The goodwill is not deductible for tax purposes and has been allocated to our Healthcare reportable segment. The above allocation of the purchase price is based upon our analysis of the fair value of identifiable assets acquired and liabilities assumed as of the acquisition date. We finalized the purchase price allocation within the measurement period ended on November 20, 2015, resulting in no material adjustments. Acquired identifiable intangible assets were measured at fair value determined primarily using the income approach, which required a forecast of all expected future cash flows either through the use of the relief-from-royalty method or the excess earnings method. The fair value of the identifiable intangible assets and their weighted-average useful lives at the time of acquisition were as follows: Fair Value Weighted Average Useful Life (Dollars in millions) Corporate trademark $ 63.0 Indefinite Product trademarks 21.0 16.9 years Technology 328.0 7.7 years Customer relationships 437.0 15.8 years Total $ 849.0 TriZetto’s results of operations have been included in our financial statements for the period subsequent to the completion of the acquisition on November 20, 2014. The following unaudited pro forma information reflecting the combined operating results of Cognizant and TriZetto for the years ended December 31, 2014 and 2013 assumes the TriZetto acquisition occurred on January 1, 2013. Such pro forma information does not reflect the potential realization of cost savings relating to the integration of TriZetto. Further, the pro forma information is not indicative of the combined results of operations that actually would have occurred had the TriZetto acquisition been completed on January 1, 2013 nor is it intended to be a projection of future operating results. Unaudited Pro Forma Information For the Years Ended December 31, 2014 December 31, 2013 (in millions) Revenues $ 10,893.0 $ 9,519.6 Income from operations 1,959.5 1,253.2 These amounts have been calculated after adjusting for the additional amortization and depreciation expense that would have been recorded assuming the fair value adjustments to finite-lived intangible assets and property, plant and equipment had been applied on January 1, 2013. The pro forma income from operations for the year ended December 31, 2014 was adjusted to exclude $40.6 million of transaction related professional services costs and $94.3 million of other costs incurred. Such costs were included in the pro forma income from operations for the year ended December 31, 2013. Supplemental schedule of noncash investing activities: In conjunction with the TriZetto acquisition, liabilities were assumed as follows: Year Ended December 31, 2014 (in millions) Fair value of assets acquired $ 3,070.7 Purchase price paid in cash (net of cash acquired) (2,627.8 ) Liabilities assumed $ 442.9 Other 2014 and 2013 acquisitions: During 2014 , excluding the acquisition of TriZetto, we completed three other business combinations for total cash consideration of approximately $46.2 million (net of cash acquired). These transactions strengthened our digital business capabilities and expertise to further develop the portfolio of digital solutions and services we offer our customers. As part of these business combinations, we acquired customer relationship assets, assembled workforces, developed technology and other assets. During 2013 , we completed four business combinations business combinations for total cash consideration of approximately $184.2 million (net of cash acquired). These transactions strengthened our local presence in Germany, Switzerland and France, expanded our expertise in enterprise application services and high-end testing services, broadened our business process services capabilities within finance and accounting, and strengthened our financial services management and regulatory consulting practice. As part of these business combinations, we acquired customer relationship assets, assembled workforces, a software platform and other assets. These acquisitions were included in our consolidated financial statements as of the date on which the businesses were acquired and were not material to our operations, financial position or cash flow. We have allocated the purchase price related to these transactions to tangible and intangible assets and liabilities, including goodwill, based on their fair values on their respective dates of acquisition, as follows: 2014 2013 Fair Value Useful Life Fair Value Useful Life (Dollars in millions) Total initial consideration, net of cash acquired $ 46.2 $ 184.2 Purchase price allocated to: Non-deductible goodwill 30.9 129.9 Customer relationship intangible assets 12.1 3-10 years 58.6 5-10 years Other intangible assets 4.3 1-4 years 7.2 1-5 years The primary items that generated the aforementioned goodwill are the value of the synergies between the acquired companies and us and the acquired assembled workforces, neither of which qualify as an amortizable intangible asset.

Short-term Investments

Short-term Investments	12 Months Ended
	Dec. 31, 2015
Investments [Abstract]
Short-term Investments	Short-term Investments Our short-term investments were as follows as of December 31: 2015 2014 (in millions) Available-for-sale investment securities: U.S. Treasury and agency debt securities $ 527.1 $ 544.7 Corporate and other debt securities 360.5 358.6 Certificates of deposit and commercial paper 754.0 4.6 Asset-backed securities 229.6 220.1 Municipal debt securities 121.3 112.8 Mutual funds 22.3 21.9 Total available-for-sale investment securities 2,014.8 1,262.7 Time deposits 809.5 501.9 Total short-term investments $ 2,824.3 $ 1,764.6 Our available-for-sale investment securities consist of U.S. dollar denominated investments primarily in U.S. Treasury notes, U.S. government agency debt securities, municipal debt securities, non-U.S. government debt securities, U.S. and international corporate bonds, certificates of deposit, commercial paper, debt securities issued by supranational institutions, mutual funds invested in fixed income securities, and asset-backed securities, including Government National Mortgage Association (GNMA) mortgage backed securities and securities backed by auto loans, credit card receivables, and other receivables. Our investment guidelines are to purchase securities which are investment grade at the time of acquisition. We monitor the credit ratings of the securities in our portfolio on an ongoing basis. Available-for-Sale Investment Securities The amortized cost, gross unrealized gains and losses and fair value of available-for-sale investment securities were as follows at December 31: 2015 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in millions) U.S. Treasury and agency debt securities $ 528.9 $ — $ (1.8 ) $ 527.1 Corporate and other debt securities 361.9 0.1 (1.5 ) 360.5 Certificates of deposit and commercial paper 754.0 0.1 (0.1 ) 754.0 Asset-backed securities 230.3 0.1 (0.8 ) 229.6 Municipal debt securities 121.2 0.2 (0.1 ) 121.3 Mutual funds 25.3 0.1 (3.1 ) 22.3 Total available-for-sale investment securities $ 2,021.6 $ 0.6 $ (7.4 ) $ 2,014.8 2014 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in millions) U.S. Treasury and agency debt securities $ 544.7 $ 0.4 $ (0.4 ) $ 544.7 Corporate and other debt securities 359.0 0.3 (0.7 ) 358.6 Certificates of deposit and commercial paper 4.6 — — 4.6 Asset-backed securities 220.4 0.1 (0.4 ) 220.1 Municipal debt securities 112.5 0.4 (0.1 ) 112.8 Mutual funds 23.9 0.3 (2.3 ) 21.9 Total available-for-sale investment securities $ 1,265.1 $ 1.5 $ (3.9 ) $ 1,262.7 The fair value and related unrealized losses of available-for-sale investment securities in a continuous unrealized loss position for less than 12 months and for 12 months or longer were as follows as of December 31: 2015 Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in millions) U.S. Treasury and agency debt securities $ 475.7 $ (1.8 ) $ — $ — $ 475.7 $ (1.8 ) Corporate and other debt securities 315.1 (1.5 ) 3.1 — 318.2 (1.5 ) Certificates of deposit and commercial paper 271.5 (0.1 ) — — 271.5 (0.1 ) Asset-backed securities 199.4 (0.7 ) 11.4 (0.1 ) 210.8 (0.8 ) Municipal debt securities 56.5 (0.1 ) — — 56.5 (0.1 ) Mutual funds — — 21.1 (3.1 ) 21.1 (3.1 ) Total $ 1,318.2 $ (4.2 ) $ 35.6 $ (3.2 ) $ 1,353.8 $ (7.4 ) 2014 Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in millions) U.S. Treasury and agency debt securities $ 256.9 $ (0.4 ) $ — $ — $ 256.9 $ (0.4 ) Corporate and other debt securities 229.7 (0.7 ) — — 229.7 (0.7 ) Certificates of deposit and commercial paper 3.7 — — — 3.7 — Asset-backed securities 151.9 (0.3 ) 2.8 (0.1 ) 154.7 (0.4 ) Municipal debt securities 28.0 (0.1 ) — — 28.0 (0.1 ) Mutual funds — — 20.7 (2.3 ) 20.7 (2.3 ) Total $ 670.2 $ (1.5 ) $ 23.5 $ (2.4 ) $ 693.7 $ (3.9 ) The unrealized losses for the above securities as of December 31, 2015 and 2014 are primarily attributable to changes in interest rates. As of December 31, 2015 , we do not consider any of the investments to be other-than-temporarily impaired. The gross unrealized gains and losses in the above tables were recorded, net of tax, in accumulated other comprehensive income (loss). The contractual maturities of our fixed income available-for-sale investment securities as of December 31, 2015 are set forth in the following table: Amortized Cost Fair Value (in millions) Due within one year $ 806.4 $ 806.5 Due after one year up to two years 536.6 535.1 Due after two years up to three years 404.9 403.3 Due after three years up to four years 18.1 18.0 Asset-backed securities 230.3 229.6 Fixed income available-for-sale investment securities $ 1,996.3 $ 1,992.5 Asset-backed securities were excluded from the maturity categories because the actual maturities may differ from the contractual maturities since the underlying receivables may be prepaid without penalties. Further, actual maturities of debt securities may differ from those presented above since certain obligations provide the issuer the right to call or prepay the obligation prior to scheduled maturity without penalty. Proceeds from sales of available-for-sale investment securities and the gross gains and losses that have been included in earnings as a result of those sales were as follows: 2015 2014 2013 (in millions) Proceeds from sales of available-for-sale investment securities $ 781.9 $ 1,475.6 $ 1,119.8 Gross gains $ 1.4 $ 2.2 $ 2.0 Gross losses (0.5 ) (0.4 ) (0.6 ) Net realized gains on sales of available-for-sale investment securities $ 0.9 $ 1.8 $ 1.4

Property and Equipment, Net

Property and Equipment, Net	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment, Net [Abstract]
Property and Equipment, net	Property and Equipment, net Property and equipment were as follows as of December 31: Estimated Useful Life (Years) 2015 2014 (in millions) Buildings 30 $ 804.9 $ 605.0 Computer equipment and software 3 696.9 537.3 Furniture and equipment 5 – 9 384.5 322.6 Land 22.6 22.6 Leasehold land lease term 63.4 60.1 Capital work-in-progress 114.9 304.7 Leasehold improvements Shorter of the lease term or the life of the leased asset 263.3 247.0 Sub-total 2,350.5 2,099.3 Accumulated depreciation and amortization (1,079.1 ) (852.1 ) Property and equipment, net $ 1,271.4 $ 1,247.2 Depreciation and amortization expense related to property and equipment was $233.1 million, $172.1 , and $155.7 million for the years ended December 31, 2015 , 2014 and 2013 , respectively. The gross amount of property and equipment recorded under capital leases was $45.9 million and $37.0 million at December 31, 2015 and 2014, respectively, and primarily related to buildings. Accumulated amortization and amortization expense related to capital lease assets were immaterial for the periods presented. In India, leasehold land is leased by us from the government of India with lease terms ranging up to 99 years . Lease payments are made at the inception of the lease agreement and amortized over the lease term. Amortization expense of leasehold land is immaterial for the periods presented and is included in depreciation and amortization expense in our accompanying consolidated statements of operations.

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, net	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, net	Goodwill and Intangible Assets, net Changes in goodwill by our reportable segments were as follows for the years ended December 31, 2015 and 2014 : Segment January 1, 2015 Goodwill Additions Foreign Currency Translation Adjustments December 31, 2015 (in millions) Financial Services $ 204.5 $ 5.5 $ (7.3 ) $ 202.7 Healthcare 2,079.9 — (3.5 ) 2,076.4 Manufacturing/Retail/Logistics 69.2 — (2.3 ) 66.9 Other 60.0 — (1.3 ) 58.7 Total goodwill $ 2,413.6 $ 5.5 $ (14.4 ) $ 2,404.7 Segment January 1, 2014 Goodwill Additions Foreign Currency Translation Adjustments December 31, 2014 (in millions) Financial Services $ 208.6 $ 4.0 $ (8.1 ) $ 204.5 Healthcare 107.4 1,976.9 (4.4 ) 2,079.9 Manufacturing/Retail/Logistics 71.6 0.7 (3.1 ) 69.2 Other 56.6 5.4 (2.0 ) 60.0 Total goodwill $ 444.2 $ 1,987.0 $ (17.6 ) $ 2,413.6 In 2014 , the increase in goodwill was primarily related to business combinations completed during the year and described in Note 2. We have not recognized any impairment losses on our goodwill balances. Components of intangible assets were as follows as of December 31: 2015 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in millions) Customer relationships $ 650.3 $ (157.6 ) $ 492.7 Developed technology 332.1 (52.5 ) 279.6 Indefinite life trademarks 63.0 — 63.0 Other 45.1 (16.1 ) 29.0 Total intangible assets $ 1,090.5 $ (226.2 ) $ 864.3 2014 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in millions) Customer relationships $ 644.4 $ (112.2 ) $ 532.2 Developed technology 332.1 (8.7 ) 323.4 Indefinite life trademarks 63.0 — 63.0 Other 45.8 (10.7 ) 35.1 Total intangible assets $ 1,085.3 $ (131.6 ) $ 953.7 Other than certain trademarks with indefinite lives, our intangible assets have finite lives and as such are subject to amortization. Amortization of intangible assets totaled $96.9 million for 2015 , $36.0 million for 2014 and $24.2 million for 2013 . During 2015 , 2014 and 2013 , amortization of $4.8 million, $8.4 million and $7.7 million, respectively, relating to customer relationship intangible assets was recorded as a reduction of revenues. These intangible assets are attributed to direct revenue contracts with sellers of acquired businesses. Estimated amortization expense related to our existing intangible assets for the next five years is as follows: Year Amount (in millions) 2016 $ 96.1 2017 93.2 2018 85.8 2019 83.5 2020 76.3

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	12 Months Ended
	Dec. 31, 2015
Accrued Expenses And Other Current Liabilities [Abstract]
Accrued Expenses and Other Current Liabilities	Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities were as follows as of December 31: 2015 2014 (in millions) Compensation and benefits $ 1,272.0 $ 906.8 Income taxes 17.1 23.8 Professional fees 69.6 82.7 Travel and entertainment 29.8 35.0 Customer volume incentives 236.1 192.1 Derivative financial instruments 10.9 97.3 Other 182.9 184.6 Total accrued expenses and other current liabilities $ 1,818.4 $ 1,522.3

Debt

Debt	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Debt	Debt On November 20, 2014, we entered into a credit agreement with a commercial bank syndicate providing for a $1,000.0 million unsecured term loan and a $750.0 million unsecured revolving credit facility. The term loan was used to pay a portion of the cash consideration in connection with the TriZetto acquisition. The revolving credit facility is available for general corporate purposes. The term loan and the revolving credit facility both mature on November 20, 2019. As of December 31, 2015 and 2014, we had notes outstanding under the revolving credit facility of $350.0 million and $650.0 million, respectively. All notes drawn to date under the revolving credit facility have been less than 90 days in duration. We are required under the credit agreement to make scheduled quarterly principal payments on the term loan. The credit agreement requires interest to be paid at either the base rate or the Eurocurrency rate, plus a margin. The margin over the base rate is 0.00% , and the margin over the Eurocurrency rate ranges from 0.75% to 1.125% , depending on our debt ratings (or, if we have not received debt ratings, from 0.875% to 1.00% , depending on our debt to total stockholders' equity ratio). Under the credit agreement, we are required to pay commitment fees on the unused portion of the revolving credit facility, which vary based on our debt ratings (or, if we have not received debt ratings, our debt to total stockholders' equity ratio). At December 31, 2015 , the interest rates on the term loan and revolving credit facility were 1.40% and 1.42% , respectively. As the interest rates on our term loan and notes outstanding under the revolving credits facility are variable, the fair value of our debt balances approximates their carrying value as of December 31, 2015 and 2014. The credit agreement contains certain negative covenants, including limitations on liens, mergers, consolidations and acquisitions, subsidiary indebtedness and affiliate transactions, as well as certain affirmative covenants. In addition, the credit agreement requires us to maintain a debt to total stockholders' equity ratio not in excess of 0.40 to 1.00. As of December 31, 2015, we are in compliance with our debt covenants. Deferred financing costs of $6.0 million related to the credit agreement are being amortized over the life of the credit agreement. As of December 31, 2015 and 2014, $4.4 million and $5.7 million, respectively, of deferred financing costs are included in other noncurrent assets in the accompanying consolidated statement of financial position. Short-term Debt The following summarizes our short-term debt balances as of December 31: 2015 2014 (in millions) Notes drawn under revolving credit facility $ 350.0 $ 650.0 Term loan - current maturities 56.3 50.0 Total short-term debt $ 406.3 $ 700.0 We have classified debt outstanding under our revolving credit facility as a short-term obligation on our consolidated statement of financial position. While the revolving credit facility has a contractual term beyond one year, it requires an execution of a note for each borrowing under the facility and such notes are each less than one year in duration. In addition, management does not intend to continuously replace the notes executed under the revolving credit facility for a continuous period that extends beyond one year. Long-term Debt The following summarizes our long-term debt balances as of December 31: 2015 2014 (in millions) Term loan, due 2019 $ 937.5 $ 987.5 Less: current maturities (56.3 ) (50.0 ) Long-term debt, net of current maturities $ 881.2 $ 937.5 The following represents the schedule of maturities of long-term debt: Year Amounts (in millions) 2016 56.3 2017 81.2 2018 100.0 2019 700.0 $ 937.5

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income before provision for income taxes shown below is based on the geographic location to which such income is attributed for years ended December 31: 2015 2014 2013 (in millions) United States $ 738.5 $ 589.2 $ 540.7 Foreign 1,425.1 1,334.8 1,147.2 Income before provision for income taxes $ 2,163.6 $ 1,924.0 $ 1,687.9 The provision for income taxes consists of the following components for the years ended December 31: 2015 2014 2013 (in millions) Current: Federal and state $ 351.8 $ 260.2 $ 270.0 Foreign 314.3 324.1 277.5 Total current 666.1 584.3 547.5 Deferred: Federal and state (58.1 ) (20.2 ) (37.1 ) Foreign (68.0 ) (79.4 ) (51.1 ) Total deferred (126.1 ) (99.6 ) (88.2 ) Total provision for income taxes $ 540.0 $ 484.7 $ 459.3 The reconciliation between our effective income tax rate and the U.S. federal statutory rate were as follows for the years ended December 31: 2015 % 2014 % 2013 % (Dollars in millions) Tax expense, at U.S. federal statutory rate $ 757.3 35.0 $ 673.4 35.0 $ 590.8 35.0 State and local income taxes, net of federal benefit 42.4 2.0 34.5 1.8 33.1 2.0 Non-taxable income for Indian tax purposes (201.4 ) (9.3 ) (183.0 ) (9.5 ) (146.3 ) (8.7 ) Rate differential on foreign earnings (34.0 ) (1.6 ) (31.8 ) (1.7 ) (24.6 ) (1.5 ) Other (24.3 ) (1.1 ) (8.4 ) (0.4 ) 6.3 0.4 Total provision for income taxes $ 540.0 25.0 $ 484.7 25.2 $ 459.3 27.2 The significant components of deferred income tax assets and liabilities recorded on the consolidated statements of financial position were as follows as of December 31: 2015 2014 (in millions) Deferred income tax assets: Net operating losses $ 5.9 $ 10.0 Revenue recognition 72.1 56.5 Compensation and benefits 194.0 145.6 Stock-based compensation 26.1 22.5 Minimum alternative tax (MAT) and other credits 219.1 184.2 Other accrued expenses 110.6 101.7 Other 2.9 15.1 630.7 535.6 Less: valuation allowance (10.4 ) (11.4 ) Deferred income tax assets, net 620.3 524.2 Deferred income tax liabilities: Depreciation and amortization 23.9 21.2 Intangible assets 251.9 280.6 Deferred income tax liabilities 275.8 301.8 Net deferred income tax assets $ 344.5 $ 222.4 In the table above, certain unrecognized income tax benefits have been netted against available same-jurisdiction deferred income tax carryforward assets. At December 31, 2015 , we had foreign and U.S. net operating loss carryforwards of approximately $6.1 million and $8.5 million, respectively. We have recorded valuation allowances on certain foreign net operating loss carryforwards. As of December 31, 2015 and 2014 , deferred income tax assets related to the minimum alternative tax, or MAT, were approximately $252.3 million and $218.5 million, respectively. The calculation of the MAT includes all profits realized by our Indian subsidiaries and any MAT paid is creditable against future corporate income tax, subject to certain limitations. Our existing MAT assets expire between March 2018 and March 2026 and we expect to fully utilize them within the applicable 10 -year expiration periods. Our Indian subsidiaries, collectively referred to as Cognizant India, are primarily export-oriented and are eligible for certain income tax holiday benefits granted by the government of India for export activities conducted within Special Economic Zones, or SEZs, for periods of up to 15 years . Our SEZ income tax holiday benefits are currently scheduled to expire in whole or in part during the years 2016 to 2025 and may be extended on a limited basis for an additional five years per unit if certain reinvestment criteria are met. Our Indian profits ineligible for SEZ benefits are subject to corporate income tax at the rate of 34.6% . In addition, all Indian profits, including those generated within SEZs, are subject to the MAT, at the rate of 21.3% . For the years ended December 31, 2015 , 2014 and 2013 , the effect of the income tax holidays granted by the Indian government was to reduce the overall income tax provision and increase net income by approximately $201.4 million, $183.0 million and $146.3 million, respectively, and increase diluted EPS by $0.33 , $0.30 and $0.24 , respectively. We pursue an international strategy that includes expanded infrastructure investments in India and geographic expansion outside the United States. Therefore, other than foreign earnings for which we have already accrued U.S. taxes, we do not intend to repatriate our foreign earnings as such earnings are deemed to be indefinitely reinvested outside the United States. As of December 31, 2015 , the amount of unrepatriated Indian earnings and total foreign earnings (including unrepatriated Indian earnings) upon which no incremental U.S. taxes have been recorded is approximately $6,671.0 million and $7,495.0 million, respectively. If such earnings are repatriated in the future, or are no longer deemed to be indefinitely reinvested, we will accrue the applicable amount of taxes associated with such earnings at that time. Due to the various methods by which such earnings could be repatriated in the future, it is not practicable to determine the amount of applicable taxes that would result from such repatriation. We conduct business globally and file income tax returns in the U.S., including federal and state, as well as various foreign jurisdictions. Tax years that remain subject to examination by the Internal Revenue Service are 2012 and onward, and years that remain subject to examination by state authorities vary by state. Years under examination by foreign tax authorities are 2001 and onward. We record incremental tax expense, based upon the more-likely-than-not standard, for any uncertain tax positions. In addition, when applicable, we adjust the previously recorded income tax expense to reflect examination results when the position is effectively settled or otherwise resolved. Our ongoing evaluations of the more-likely-than-not outcomes of the examinations and related tax positions require judgment and can result in adjustments that increase or decrease our effective income tax rate, as well as impact our operating results. The specific timing of when the resolution of each tax position will be reached is uncertain. Changes in unrecognized income tax benefits were as follows for the years ended December 31: 2015 2014 (in millions) Balance, beginning of year $ 135.6 $ 96.6 Additions based on tax positions related to the current year 20.7 7.8 Additions for tax positions of prior years 6.5 5.9 Additions for tax positions of acquired subsidiaries — 29.2 Reductions for tax positions due to lapse of statutes of limitations (23.1 ) — Reductions for tax positions of prior years — — Settlements — — Foreign currency exchange movement (1.0 ) (3.9 ) Balance, end of year $ 138.7 $ 135.6 At December 31, 2015 , the entire balance of unrecognized income tax benefits would affect our effective income tax rate, if recognized. While the Company believes uncertain tax positions may be settled or resolved within the next twelve months, it is difficult to estimate the income tax impact of these potential resolutions at this time. We recognize accrued interest and any penalties associated with uncertain tax positions as part of our provision for income taxes. The total amount of accrued interest and penalties at December 31, 2015 and 2014 was approximately $11.3 million and $11.2 million, respectively, and relates to U.S. and foreign tax matters. The amounts of interest and penalties expensed in 2015 , 2014 and 2013 were immaterial.

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments In the normal course of business, we use foreign exchange forward contracts to manage foreign currency exchange rate risk. The estimated fair value of the foreign exchange forward contracts considers the following items: discount rate, timing and amount of cash flow and counterparty credit risk. Derivatives may give rise to credit risks from the possible non-performance by counterparties. Credit risk is generally limited to the fair value of those contracts that are favorable to us. We have limited our credit risk by entering into derivative transactions only with highly-rated global financial institutions, limiting the amount of credit exposure with any one financial institution and conducting ongoing evaluation of the creditworthiness of the financial institutions with which we do business. In addition, all the assets and liabilities related to our foreign exchange forward contracts set forth in the below table are subject to International Swaps and Derivatives Association, or ISDA, master netting arrangements or other similar agreements with each individual counterparty. These master netting arrangements generally provide for net settlement of all outstanding contracts with the counterparty in the case of an event of default or a termination event. We have presented all the assets and liabilities related to our foreign exchange forward contracts on a gross basis, with no offsets, in our accompanying consolidated statements of financial position. There is no financial collateral (including cash collateral) posted or received by us related to our foreign exchange forward contracts. The following table provides information on the location and fair values of derivative financial instruments included in our consolidated statement of financial position as of December 31: 2015 2014 Designation of Derivatives Location on Statement of Financial Position Assets Liabilities Assets Liabilities (in millions) Cash Flow Hedges – Designated as hedging instruments Foreign exchange forward contracts Other current assets $ 7.2 $ — $ 0.7 $ — Other noncurrent assets 1.6 — 3.9 — Accrued expenses and other current liabilities — 9.7 — 97.2 Other noncurrent liabilities — 13.5 — 10.0 Total 8.8 23.2 4.6 107.2 Other Derivatives – Not designated as hedging instruments Foreign exchange forward contracts Other current assets 0.4 — 2.0 — Accrued expenses and other current liabilities — 1.2 — 0.1 Total 0.4 1.2 2.0 0.1 Total $ 9.2 $ 24.4 $ 6.6 $ 107.3 Cash Flow Hedges We have entered into a series of foreign exchange forward contracts that are designated as cash flow hedges of Indian rupee denominated payments in India. These contracts are intended to partially offset the impact of movement of exchange rates on future operating costs and are scheduled to mature each month during 2016 , 2017 and 2018 . Under these contracts, we purchase Indian rupees and sell U.S. dollars. The changes in fair value of these contracts are initially reported in the caption “accumulated other comprehensive income (loss)” in our consolidated statements of financial position and are subsequently reclassified to earnings in the same period the hedge contract matures. As of December 31, 2015 , we estimate that $2.0 million, net of tax, of the net losses related to derivatives designated as cash flow hedges recorded in accumulated other comprehensive income (loss) is expected to be reclassified into earnings within the next 12 months. The notional value of our outstanding contracts by year of maturity and the net unrealized (loss) included in accumulated other comprehensive income (loss) for such contracts were as follows as of December 31: 2015 2014 (in millions) 2015 $ — $ 1,320.0 2016 1,215.0 720.0 2017 900.0 420.0 2018 330.0 — Total notional value of contracts outstanding $ 2,445.0 $ 2,460.0 Net unrealized (loss) included in accumulated other comprehensive income (loss), net of taxes $ (11.7 ) $ (86.7 ) Upon settlement or maturity of the cash flow hedge contracts, we record the related gain or loss, based on our designation at the commencement of the contract, with the hedged Indian rupee denominated expense reported within cost of revenues and selling, general and administrative expenses. Hedge ineffectiveness was immaterial for all periods presented. The following table provides information on the location and amounts of pre-tax (losses) on our cash flow hedges for the year ended December 31: Decrease (Increase) in Derivative Losses Recognized in Accumulated Other Comprehensive Income (Loss) (effective portion) Location of Net Derivative (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion) Net (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion) 2015 2014 2015 2014 (in millions) Cash Flow Hedges – Designated as hedging instruments Foreign exchange forward contracts $ 17.0 $ 115.7 Cost of revenues $ (59.3 ) $ (113.4 ) Selling, general and administrative expenses (11.9 ) (23.2 ) Total $ (71.2 ) $ (136.6 ) The activity related to the change in net unrealized (losses) on our cash flow hedges included in accumulated other comprehensive income (loss) is presented in Note 11. Other Derivatives We use foreign exchange forward contracts, which have not been designated as hedges, to hedge balance sheet exposure to certain monetary assets and liabilities denominated in currencies other than the functional currency of our foreign subsidiaries. Contracts outstanding as of December 31, 2015 are schedule to mature in 2016. Realized gains or losses and changes in the estimated fair value of these derivative financial instruments are reported in the caption "Foreign currency exchange gains (losses), net" in our consolidated statements of operations. Additional information related to our outstanding contracts is as follows as of December 31: 2015 2014 Notional Market Value Notional Market Value (in millions) Contracts to purchase U.S. dollars and sell: Indian rupees $ 150.7 $ (0.6 ) $ 160.0 $ 1.8 Euros 5.3 (0.1 ) 24.4 0.2 British pounds — — 17.9 — Australian dollars 8.2 (0.1 ) 9.6 (0.1 ) Canadian dollars 1.3 — 3.7 — Total $ 165.5 $ (0.8 ) $ 215.6 $ 1.9 The following table provides information on the location and amounts of realized and unrealized pre-tax gains and losses on our other derivative financial instruments for the year ended December 31: Location of Net Gains (Losses) on Derivative Instruments Amount of Net Gains (Losses) on Derivative Instruments 2015 2014 (in millions) Other Derivatives – Not designated as hedging instruments Foreign currency exchange gains (losses), net Foreign exchange forward contracts $ 0.3 $ (3.9 ) The related cash flow impacts of all of our derivative activities are reflected as cash flows from operating activities.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements We measure our cash equivalents, investments and foreign exchange forward contracts at fair value. The authoritative guidance defines fair value as the exit price, or the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. The authoritative guidance also establishes a fair value hierarchy that is intended to increase consistency and comparability in fair value measurements and related disclosures. The fair value hierarchy is based on inputs to valuation techniques that are used to measure fair value that are either observable or unobservable. Observable inputs reflect assumptions market participants would use in pricing an asset or liability based on market data obtained from independent sources while unobservable inputs reflect a reporting entity’s pricing based upon their own market assumptions. The fair value hierarchy consists of the following three levels: • Level 1 – Inputs are quoted prices in active markets for identical assets or liabilities. • Level 2 – Inputs are quoted prices for similar assets or liabilities in an active market, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable and market-corroborated inputs which are derived principally from or corroborated by observable market data. • Level 3 – Inputs are derived from valuation techniques in which one or more significant inputs or value drivers are unobservable. The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of December 31, 2015 : Level 1 Level 2 Level 3 Total (in millions) Cash equivalents: Money market funds $ 495.9 $ — $ — $ 495.9 Total cash equivalents 495.9 — — 495.9 Short-term investments: Time deposits — 809.5 — 809.5 Available-for-sale investment securities: U.S. Treasury and agency debt securities 463.7 63.4 — 527.1 Corporate and other debt securities — 360.5 — 360.5 Certificates of deposit and commercial paper — 754.0 — 754.0 Asset-backed securities — 229.6 — 229.6 Municipal debt securities — 121.3 — 121.3 Mutual funds — 22.3 — 22.3 Total available-for-sale investment securities 463.7 1,551.1 — 2,014.8 Total short-term investments 463.7 2,360.6 — 2,824.3 Derivative financial instruments - foreign exchange forward contracts: Other current assets — 7.6 — 7.6 Accrued expenses and other current liabilities — (10.9 ) — (10.9 ) Other noncurrent assets — 1.6 — 1.6 Other noncurrent liabilities — (13.5 ) — (13.5 ) Total $ 959.6 $ 2,345.4 $ — $ 3,305.0 The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of December 31, 2014 : Level 1 Level 2 Level 3 Total (in millions) Cash equivalents: Money market funds $ 176.5 $ — $ — $ 176.5 Commercial paper — 7.4 — 7.4 Total cash equivalents 176.5 7.4 — 183.9 Short-term investments: Time deposits — 501.9 — 501.9 Available-for-sale investment securities: U.S. Treasury and agency debt securities 426.8 117.9 — 544.7 Corporate and other debt securities — 358.6 — 358.6 Certificates of deposit and commercial paper — 4.6 — 4.6 Asset-backed securities — 220.1 — 220.1 Municipal debt securities — 112.8 — 112.8 Mutual funds — 21.9 — 21.9 Total available-for-sale investment securities 426.8 835.9 — 1,262.7 Total short-term investments 426.8 1,337.8 — 1,764.6 Derivative financial instruments - foreign exchange forward contracts: Other current assets — 2.7 — 2.7 Accrued expenses and other current liabilities — (97.3 ) — (97.3 ) Other noncurrent assets — 3.9 — 3.9 Other noncurrent liabilities — (10.0 ) — (10.0 ) Total $ 603.3 $ 1,244.5 $ — $ 1,847.8 We measure the fair value of money market funds and U.S. Treasury securities based on quoted prices in active markets for identical assets and therefore classify these assets as Level 1. The fair value of commercial paper, certificates of deposit, U.S. government agency securities, municipal debt securities, U.S. and international corporate bonds and foreign government debt securities is measured based on relevant trade data, dealer quotes, or model driven valuations using significant inputs derived from or corroborated by observable market data, such as yield curves and credit spreads. We measure the fair value of our asset-backed securities using model driven valuations based on significant inputs derived from or corroborated by observable market data such as dealer quotes, available trade information, spread data, current market assumptions on prepayment speeds and defaults and historical data on deal collateral performance. The value of the mutual funds invested in fixed income securities is based on the net asset value, or NAV, of the fund, with appropriate consideration of the liquidity and any restrictions on disposition of our investment in the fund. The carrying value of the time deposits approximated fair value as of December 31, 2015 and 2014 . We estimate the fair value of each foreign exchange forward contract by using a present value of expected cash flows model. This model calculates the difference between the current market forward price and the contracted forward price for each foreign exchange contract and applies the difference in the rates to each outstanding contract. The market forward rates include a discount and credit risk factor. The amounts are aggregated by type of contract and maturity. During the years ended December 31, 2015 , 2014 and 2013 , there were no transfers among Level 1, Level 2 or Level 3 financial assets and liabilities.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Changes in accumulated other comprehensive income (loss) by component were as follows for the year ended December 31, 2015 : 2015 Before Tax Amount Tax Effect Net of Tax Amount (in millions) Foreign currency translation adjustments: Beginning balance $ (34.8 ) $ — $ (34.8 ) Change in foreign currency translation adjustments (55.1 ) — (55.1 ) Ending balance $ (89.9 ) $ — $ (89.9 ) Unrealized (losses) on available-for-sale investment securities: Beginning balance $ (2.4 ) $ 0.8 $ (1.6 ) Net unrealized (losses) arising during the period (3.5 ) 0.8 (2.7 ) Reclassification of net (gains) to Other, net (0.9 ) 0.6 (0.3 ) Net change (4.4 ) 1.4 (3.0 ) Ending balance $ (6.8 ) $ 2.2 $ (4.6 ) Unrealized (losses) on cash flow hedges: Beginning balance $ (102.6 ) $ 15.9 $ (86.7 ) Unrealized gains arising during the period 17.0 (0.3 ) 16.7 Reclassifications of losses to: Cost of revenues 59.3 (10.8 ) 48.5 Selling, general and administrative expenses 11.9 (2.1 ) 9.8 Net change 88.2 (13.2 ) 75.0 Ending balance $ (14.4 ) $ 2.7 $ (11.7 ) Accumulated other comprehensive income (loss): Beginning balance $ (139.8 ) $ 16.7 $ (123.1 ) Other comprehensive income (loss) 28.7 (11.8 ) 16.9 Ending balance $ (111.1 ) $ 4.9 $ (106.2 ) Changes in accumulated other comprehensive income (loss) by component were as follows for the years ended December 31, 2014 and 2013 : 2014 2013 Before Tax Amount Tax Effect Net of Tax Amount Before Tax Tax Net of Tax (in millions) Foreign currency translation adjustments: Beginning balance $ 24.0 $ — $ 24.0 $ 11.5 $ — $ 11.5 Change in foreign currency translation adjustments (58.8 ) — (58.8 ) 12.5 — 12.5 Ending balance $ (34.8 ) $ — $ (34.8 ) $ 24.0 $ — $ 24.0 Unrealized (losses) gains on available-for-sale investment securities: Beginning balance $ (0.5 ) $ 0.2 $ (0.3 ) $ 2.5 $ (0.9 ) $ 1.6 Net unrealized (losses) arising during the period (0.1 ) — (0.1 ) (1.7 ) 0.6 (1.1 ) Reclassification of net (gains) to Other, net (1.8 ) 0.6 (1.2 ) (1.3 ) 0.5 (0.8 ) Net change (1.9 ) 0.6 (1.3 ) (3.0 ) 1.1 (1.9 ) Ending balance $ (2.4 ) $ 0.8 $ (1.6 ) $ (0.5 ) $ 0.2 $ (0.3 ) Unrealized (losses) on cash flow hedges: Beginning balance $ (354.9 ) $ 54.9 $ (300.0 ) $ (296.6 ) $ 43.8 $ (252.8 ) Unrealized gains (losses) arising during the period 115.7 (17.9 ) 97.8 (221.3 ) 36.2 (185.1 ) Reclassifications of net losses to: Cost of revenues 113.4 (17.5 ) 95.9 135.0 (20.8 ) 114.2 Selling, general and administrative expenses 23.2 (3.6 ) 19.6 28.0 (4.3 ) 23.7 Net change 252.3 (39.0 ) 213.3 (58.3 ) 11.1 (47.2 ) Ending balance $ (102.6 ) $ 15.9 $ (86.7 ) $ (354.9 ) $ 54.9 $ (300.0 ) Accumulated other comprehensive income (loss): Beginning balance $ (331.4 ) $ 55.1 $ (276.3 ) $ (282.6 ) $ 42.9 $ (239.7 ) Other comprehensive income (loss) 191.6 (38.4 ) 153.2 (48.8 ) 12.2 (36.6 ) Ending balance $ (139.8 ) $ 16.7 $ (123.1 ) $ (331.4 ) $ 55.1 $ (276.3 )

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies We lease office space and equipment under operating leases, which expire at various dates through the year 2027. Certain leases contain renewal provisions and generally require us to pay utilities, insurance, taxes, and other operating expenses. Future minimum rental payments on our operating leases as of December 31, 2015 are as follows: Operating lease obligation (in millions) 2016 $ 134.2 2017 117.4 2018 95.6 2019 86.2 2020 68.4 Thereafter 164.9 Total minimum lease payments $ 666.7 Rental expense totaled $212.3 million, $190.9 million and $166.2 million for the years ended December 31, 2015 , 2014 and 2013 , respectively. Future minimum rental payments on our capital leases as of December 31, 2015 are as follows: Capital lease obligation (in millions) 2016 $ 5.4 2017 4.9 2018 4.8 2019 4.3 2020 3.9 Thereafter 31.5 Total minimum lease payments 54.8 Interest (14.6 ) Present value of minimum lease payments $ 40.2 As of December 31, 2015 , we had outstanding fixed capital commitments of approximately $76.4 million related to our India real estate development program to build new Company-owned state-of-the-art IT development and delivery centers. We are involved in various claims and legal actions arising in the ordinary course of business. We accrue a liability when a loss is considered probable and the amount can be reasonably estimated. In the opinion of management, the outcome of any existing claims and legal or regulatory proceedings, if decided adversely, is not expected to have a material adverse effect on our business, financial condition, results of operations and cash flows. Additionally, many of our engagements involve projects that are critical to the operations of our customers’ business and provide benefits that are difficult to quantify. Any failure in a customer’s systems or our failure to meet our contractual obligations to our clients, including any breach involving a customer’s confidential information or sensitive data, or our obligations under applicable laws or regulations could result in a claim for substantial damages against us, regardless of our responsibility for such failure. Although we attempt to contractually limit our liability for damages arising from negligent acts, errors, mistakes, or omissions in rendering our services, there can be no assurance that the limitations of liability set forth in our contracts will be enforceable in all instances or will otherwise protect us from liability for damages. Although we have general liability insurance coverage, including coverage for errors or omissions, there can be no assurance that such coverage will cover all types of claims, continue to be available on reasonable terms or will be available in sufficient amounts to cover one or more large claims, or that the insurer will not disclaim coverage as to any future claim. The successful assertion of one or more large claims against us that exceed or are not covered by our insurance coverage or changes in our insurance policies, including premium increases or the imposition of large deductible or co-insurance requirements, could have a material adverse effect on our business, results of operations, financial condition and cash flows. In the normal course of business and in conjunction with certain client engagements, we have entered into contractual arrangements through which we may be obligated to indemnify clients or other parties with whom we conduct business with respect to certain matters. These arrangements can include provisions whereby we agree to hold the indemnified party and certain of their affiliated entities harmless with respect to third-party claims related to such matters as our breach of certain representations or covenants, or out of our intellectual property infringement, our gross negligence or willful misconduct or certain other claims made against certain parties. Payments by us under any of these arrangements are generally conditioned on the client making a claim and providing us with full control over the defense and settlement of such claim. It is not possible to determine the maximum potential amount of loss under these indemnification agreements due to the unique facts and circumstances involved in each particular agreement. Historically, we have not made payments under these indemnification agreements and therefore they have not had any impact on our operating results, financial position, or cash flows. However, if events arise requiring us to make payment for indemnification claims under our indemnification obligations in contracts we have entered, such payments could have material adverse impacts on our business, results of operations, financial condition and cash flows.

Employee Benefits

Employee Benefits	12 Months Ended
	Dec. 31, 2015
General Discussion of Pension and Other Postretirement Benefits [Abstract]
Employee Benefits	Employee Benefits We contribute to defined contribution plans in the United States and Europe, including 401(k) savings and supplemental retirement plans in the United States. Total expenses for Company contributions to these plans were $62.0 million, $45.1 million and $34.6 million for the years ended December 31, 2015 , 2014 and 2013 , respectively. We maintain employee benefit plans that cover substantially all India-based employees. The employees’ provident fund, pension and family pension plans are statutorily defined contribution retirement benefit plans. Under the plans, employees contribute up to 12% of their base compensation, which is matched by an equal contribution by the Company. For these plans, we recognized a contribution expense of $71.4 million, $63.4 million and $56.1 million for the years ended December 31, 2015 , 2014 and 2013 , respectively. We also maintain a gratuity plan in India that is a statutory post-employment benefit plan providing defined lump sum benefits. We make annual contributions to the employees’ gratuity fund established with a government-owned insurance corporation to fund a portion of the estimated obligation. Accordingly, our liability for the gratuity plan reflects the undiscounted benefit obligation payable as of the balance sheet date which was based upon the employees’ salary and years of service. As of December 31, 2015 and 2014 , the amount accrued under the gratuity plan was $98.2 million and $90.8 million, which is net of fund assets of $77.6 million and $66.7 million, respectively. Expense recognized by us was $30.0 million, $36.4 million and $31.0 million for the years ended December 31, 2015 , 2014 and 2013 , respectively.

Stock-Based Compensation Plans

Stock-Based Compensation Plans	12 Months Ended
	Dec. 31, 2015
Share-based Compensation [Abstract]
Stock-Based Compensation Plans	Stock-Based Compensation Plans On June 5, 2009, our stockholders approved the adoption of the Cognizant Technology Solutions Corporation 2009 Incentive Compensation Plan (as amended and restated, the “2009 Incentive Plan”). Under the 2009 Incentive Plan, 48.0 million shares of our Class A common stock were reserved for issuance. The 2009 Incentive Plan is the successor plan to our Amended and Restated 1999 Incentive Compensation Plan which terminated on April 13, 2009 in accordance with its terms, our Amended and Restated Non-Employee Directors’ Stock Option Plan and our Amended and Restated Key Employees’ Stock Option Plan which terminated in July 2009 (collectively, the “Predecessor Plans”). The 2009 Incentive Plan will not affect any options or stock issuances outstanding under the Predecessor Plans. No further awards will be made under the Predecessor Plans. As of December 31, 2015 , we have 12.9 million shares available for grant under the 2009 Incentive Plan. Stock options granted to employees under our plans have a life ranging from seven to ten years , vest proportionally over four years , unless specified otherwise, and have an exercise price equal to the fair market value of the common stock on the date of grant. Grants to non-employee directors vest proportionally over two years . Stock-based compensation expense relating to stock options is recognized on a straight-line basis over the requisite service period. Restricted stock units vest proportionately in quarterly or annual installments over three to four years . Stock-based compensation expense relating to restricted stock units is recognized on a straight-line basis over the requisite service period. We granted performance stock units that vest over periods ranging from one to three years to employees, including our executive officers. The vesting of performance stock units is contingent on both meeting certain financial performance targets and continued service. Stock-based compensation costs for performance stock units that vest proportionally are recognized on a graded-vesting basis over the vesting period based on the most probable outcome of the performance conditions. If the minimum performance targets are not met, no compensation cost is recognized and any recognized compensation cost is reversed. The Company’s 2004 Employee Stock Purchase Plan (the “Purchase Plan”), as amended in 2013, provides for the issuance of up to 28.0 million shares of Class A common stock to eligible employees. The Purchase Plan provides for eligible employees to purchase whole shares of Class A common stock at a price of 90% of the lesser of: (a) the fair market value of a share of Class A common stock on the first date of the purchase period or (b) the fair market value of a share of Class A common stock on the last date of the purchase period. Stock-based compensation expense for the Purchase Plan is recognized over the vesting period of three months on a straight-line basis. As of December 31, 2015 , we had 8.2 million shares available for future grants and issuances under the Purchase Plan. The allocation of total stock-based compensation expense between cost of revenues and selling, general and administrative expenses as well as the related income tax benefit were as follows for the three years ended December 31: 2015 2014 2013 (in millions) Cost of revenues $ 39.5 $ 26.8 $ 19.1 Selling, general and administrative expenses 152.5 108.0 99.7 Total stock-based compensation expense $ 192.0 $ 134.8 $ 118.8 Income tax benefit $ 46.2 $ 31.4 $ 29.4 We estimate the fair value of each stock option granted using the Black-Scholes option-pricing model. For the years ended December 31, 2015 , 2014 and 2013 , expected volatility was calculated using implied market volatilities. In addition, the expected term, which represents the period of time, measured from the grant date, that vested options are expected to be outstanding, was derived by incorporating exercise and post-vest termination assumptions, based on historical data, in a Monte Carlo simulation model. The risk-free rate is derived from the U.S. Treasury yield curve in effect at the time of grant. We have not paid any dividends. Forfeiture assumptions used to recognize stock-based compensation expense are based on an analysis of historical data. The fair values of option grants, including the Purchase Plan, were estimated at the date of grant during the years ended December 31, 2015 , 2014 , and 2013 based upon the following assumptions and were as follows: 2015 2014 2013 Dividend yield 0 % 0 % 0 % Weighted average volatility factor: Stock options 28.11 % 28.74 % 33.47 % Purchase Plan 25.78 % 24.86 % 29.17 % Weighted average expected life (in years): Stock options 4.29 3.92 3.82 Purchase Plan 0.25 0.25 0.25 Weighted average risk-free interest rate: Stock options 1.41 % 1.25 % 0.73 % Purchase Plan 0.12 % 0.02 % 0.05 % Weighted average grant date fair value: Stock options $ 16.53 $ 11.81 $ 8.65 Purchase Plan $ 9.04 $ 7.29 $ 5.87 During the year ended December 31, 2015 , we issued 2.1 million shares of Class A common stock under the Purchase Plan with a total vested fair value of approximately $19.2 million. A summary of the activity for stock options granted under our stock-based compensation plans as of December 31, 2015 and changes during the year then ended is presented below: Number of Options (in millions) Weighted Average Exercise Price (in dollars) Weighted Average Remaining Life (in years) Aggregate Intrinsic Value (in millions) Outstanding at January 1, 2015 5.4 $ 17.84 Granted 0.1 65.38 Exercised (1.3 ) 15.76 Cancelled — — Expired — — Outstanding at December 31, 2015 4.2 $ 19.09 1.75 $ 170.8 Vested and expected to vest at December 31, 2015 4.2 $ 19.02 1.75 $ 170.8 Exercisable at December 31, 2015 4.1 $ 18.22 1.66 $ 170.4 As of December 31, 2015 , $0.8 million of total remaining unrecognized stock-based compensation cost related to stock options is expected to be recognized over the weighted-average remaining requisite service period of one year. The total intrinsic value of options exercised was $58.5 million, $58.3 million and $137.4 million for the years ended December 31, 2015 , 2014 and 2013 , respectively. The fair value of performance stock units and restricted stock units is determined based on the number of stock units granted and the quoted price of our stock at date of grant. A summary of the activity for performance stock units granted under our stock-based compensation plans as of December 31, 2015 and changes during the year then ended is presented below. The presentation reflects the number of performance stock units at the maximum performance milestones. Number of Units (in millions) Weighted Average Grant Date Fair Value (in dollars) Unvested at January 1, 2015 3.6 $ 47.42 Granted 0.7 64.39 Vested (1.2 ) 37.69 Forfeited (0.1 ) 47.67 Reduction due to the achievement of lower than maximum performance milestones (0.5 ) 54.30 Unvested at December 31, 2015 2.5 $ 55.69 As of December 31, 2015 , $55.0 million of total remaining unrecognized stock-based compensation cost related to performance stock units is expected to be recognized over the weighted-average remaining requisite service period of 1.83 years. A summary of the activity for restricted stock units granted under our stock-based compensation plans as of December 31, 2015 and changes during the year then ended is presented below: Number of Units (in millions) Weighted Average Grant Date Fair Value (in dollars) Unvested at January 1, 2015 5.4 $ 48.73 Granted 2.0 63.25 Vested (2.3 ) 47.15 Forfeited (0.4 ) 50.97 Unvested at December 31, 2015 4.7 $ 55.50 As of December 31, 2015 , $219.1 million of total remaining unrecognized stock-based compensation cost related to restricted stock units is expected to be recognized over the weighted-average remaining requisite service period of 2.01 years.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2015
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Segment Information	Segment Information Our reportable segments are: • Financial Services, which includes customers providing banking/transaction processing, capital markets and insurance services; • Healthcare, which includes healthcare providers and payers as well as life sciences customers, including pharmaceutical, biotech and medical device companies; • Manufacturing/Retail/Logistics, which includes manufacturers, retailers, travel and other hospitality customers, as well as customers providing logistics services; and • Other, which is an aggregation of industry segments each of which, individually, represents less than 10% of consolidated revenues and segment operating profit. The Other reportable segment includes our information, media and entertainment services, communications and high technology operating segments. Our sales managers, account executives, account managers and project teams are aligned in accordance with the specific industries they serve. Our chief operating decision maker evaluates the Company’s performance and allocates resources based on segment revenues and operating profit. Segment operating profit is defined as income from operations before unallocated costs. Generally, operating expenses for each operating segment have similar characteristics and are subject to the same factors, pressures and challenges. However, the economic environment and its effects on industries served by our operating segments may affect revenue and operating expenses to differing degrees. Expenses included in segment operating profit consist principally of direct selling and delivery costs as well as a per seat charge for use of the development and delivery centers. Certain selling, general and administrative expenses, excess or shortfall of incentive compensation for delivery personnel as compared to target, stock-based compensation expense, a portion of depreciation and amortization and the impact of the settlements of our cash flow hedges are not allocated to individual segments in internal management reports used by the chief operating decision maker. Accordingly, such expenses are excluded from segment operating profit and are separately disclosed as “unallocated” and adjusted only against our total income from operations. Additionally, management has determined that it is not practical to allocate identifiable assets by segment, since such assets are used interchangeably among the segments. Revenues from external customers and segment operating profit, before unallocated expenses, for the Financial Services, Healthcare, Manufacturing/Retail/Logistics, and Other reportable segments were as follows: 2015 2014 2013 (in millions) Revenues: Financial Services $ 5,002.9 $ 4,285.6 $ 3,717.6 Healthcare 3,667.5 2,689.4 2,264.8 Manufacturing/Retail/Logistics 2,343.9 2,093.6 1,868.3 Other 1,401.7 1,194.1 992.5 Total revenue $ 12,416.0 $ 10,262.7 $ 8,843.2 Segment Operating Profit: Financial Services $ 1,641.9 $ 1,320.1 $ 1,212.1 Healthcare 1,200.0 851.0 829.9 Manufacturing/Retail/Logistics 802.7 685.7 630.3 Other 453.7 391.9 318.3 Total segment operating profit 4,098.3 3,248.7 2,990.6 Less: unallocated costs 1,956.3 1,363.8 1,312.7 Income from operations $ 2,142.0 $ 1,884.9 $ 1,677.9 Geographic Area Information Revenue and long-lived assets, by geographic area, were as follows: 2015 2014 2013 (in millions) Revenues: (1) North America (2) $ 9,759.4 $ 7,879.8 $ 6,860.1 Europe (3) 2,008.2 1,883.6 1,579.2 Rest of World (4) 648.4 499.3 403.9 Total $ 12,416.0 $ 10,262.7 $ 8,843.2 2015 2014 2013 (in millions) Long-lived Assets: (5) North America (2) $ 242.4 $ 188.3 $ 48.4 Europe 32.2 29.8 22.7 Rest of World (4)(6) 996.8 1,029.1 1,010.1 Total $ 1,271.4 $ 1,247.2 $ 1,081.2 _____________ (1) Revenues are attributed to regions based upon customer location. (2) Substantially all relates to operations in the United States. (3) Includes revenue from operations in the United Kingdom of $1,188.5 million , $1,099.2 million and $942.6 million for the years ended 2015 , 2014 and 2013 , respectively. (4) Includes our operations in Asia Pacific, the Middle East and Latin America. (5) Long-lived assets include property and equipment, net of accumulated depreciation and amortization. (6) Substantially all of these long-lived assets relate to our operations in India.

Quarterly Financial Data (Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Data [Abstract]
Quarterly Financial Data	Quarterly Financial Data (Unaudited) Summarized quarterly results for the two years ended December 31, 2015 are as follows: Three Months Ended 2015 March 31 June 30 September 30 December 31 Full Year (in millions, except per share data) Revenues $ 2,911.4 $ 3,085.1 $ 3,187.0 $ 3,232.5 $ 12,416.0 Cost of revenues (exclusive of depreciation and amortization expense shown separately below) 1,727.2 1,844.8 1,934.6 1,933.6 7,440.2 Selling, general and administrative expenses 610.8 612.0 627.1 658.7 2,508.6 Depreciation and amortization expense 73.1 82.8 82.5 86.8 325.2 Income from operations 500.3 545.5 542.8 553.4 2,142.0 Net income 382.9 420.1 397.2 423.4 1,623.6 Basic EPS (1) $ 0.63 $ 0.69 $ 0.65 $ 0.70 $ 2.67 Diluted EPS (1) $ 0.62 $ 0.68 $ 0.65 $ 0.69 $ 2.65 Three Months Ended 2014 March 31 June 30 September 30 December 31 Full Year (in millions, except per share data) Revenues $ 2,422.3 $ 2,517.1 $ 2,581.0 $ 2,742.3 $ 10,262.7 Cost of revenues (exclusive of depreciation and amortization expense shown separately below) 1,432.4 1,499.5 1,569.8 1,639.4 6,141.1 Selling, general and administrative expenses 485.4 482.9 506.0 562.7 2,037.0 Depreciation and amortization expense 44.5 46.7 47.7 60.8 199.7 Income from operations 460.0 488.0 457.5 479.4 1,884.9 Net income 348.9 371.9 355.6 362.9 1,439.3 Basic EPS (1) $ 0.57 $ 0.61 $ 0.58 $ 0.60 $ 2.37 Diluted EPS (1) $ 0.57 $ 0.61 $ 0.58 $ 0.59 $ 2.35 (1) The sum of the quarterly basic and diluted EPS for each of the four quarters may not equal the EPS for the year due to rounding.

Valuation And Qualifying Accoun

Valuation And Qualifying Accounts	12 Months Ended
	Dec. 31, 2015
Valuation and Qualifying Accounts [Abstract]
Valuation And Qualifying Accounts	Description Balance at Beginning of Period Charged to Costs and Expenses Charged to Other Accounts (1) Deductions /Other Balance at End of Period (in millions) Trade accounts receivable allowance for doubtful accounts: 2015 $ 36.9 $ 10.2 $ — $ 8.1 $ 39.0 2014 $ 26.8 $ 4.7 $ 6.2 $ 0.8 $ 36.9 2013 $ 25.8 $ 3.6 $ — $ 2.6 $ 26.8 Warranty accrual: 2015 $ 21.2 $ 27.6 $ — $ 25.1 $ 23.7 2014 $ 17.7 $ 24.9 $ — $ 21.4 $ 21.2 2013 $ 14.8 $ 20.3 $ — $ 17.4 $ 17.7 Valuation allowance—deferred income tax assets: 2015 $ 11.4 $ 3.3 $ — $ 4.3 $ 10.4 2014 $ 5.7 $ 0.2 $ 5.6 $ 0.1 $ 11.4 2013 $ 6.3 $ 4.0 $ — $ 4.6 $ 5.7 (1) Amounts relate to material acquisitions.

Business Description and Summ25

Business Description and Summary of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation And Principles of Consolidation	Basis of Presentation and Principles of Consolidation . The consolidated financial statements are presented in accordance with generally accepted accounting principles in the United States of America, or U.S. GAAP, and reflect the consolidated financial position, results of operations, comprehensive income and cash flows of our consolidated subsidiaries for all periods presented. All intercompany balances and transactions have been eliminated in consolidation.
Cash And Cash Equivalents And Investments	Cash and Cash Equivalents and Investments. Cash and cash equivalents consist of all cash balances, including money market funds and liquid instruments. Liquid instruments are classified as cash equivalents when their maturities at the date of purchase are three months or less and as short-term investments when their maturities at the date of purchase are greater than three months. We determine the appropriate classification of our investments in marketable securities at the date of purchase and reevaluate such designation at each balance sheet date. We have classified and accounted for our marketable securities as available-for-sale. After consideration of our risk versus reward objectives, as well as our liquidity requirements, we may sell these securities prior to their stated maturities. As we view these marketable securities as available to support current operations, we classify such securities with maturities at the date of purchase beyond twelve months as short-term investments because such investments represent an investment in cash that is available for current operations. Available-for-sale securities are reported at fair value with changes in unrealized gains and losses recorded as a separate component of accumulated other comprehensive income (loss) until realized. We determine the cost of the securities sold based on the specific identification method. Time deposits with financial institutions are valued at cost, which approximates fair value. Interest and amortization of premiums and discounts for debt securities are included in interest income. We also evaluate our available-for-sale investments periodically for possible other-than-temporary impairment by reviewing factors such as the length of time and extent to which fair value has been below cost basis, the financial condition of the issuer, whether we intend to sell the security and whether it is more likely than not that we will be required to sell the security prior to recovery of its amortized cost basis. Once a decline in fair value is determined to be other-than-temporary, an impairment charge is generally recorded to income and a new cost basis in the investment is established.
Allowance For Doubtful Accounts	Allowance for Doubtful Accounts. We maintain an allowance for doubtful accounts for estimated losses resulting from the inability of our customers to make required payments. The allowance for doubtful accounts is determined by evaluating the relative credit-worthiness of each customer, historical collections experience and other information, including the aging of the receivables. We evaluate the collectibility of our accounts receivable on an on-going basis and write-off accounts when they are deemed to be uncollectible.
Unbilled Accounts Receivable	Unbilled Accounts Receivable. Unbilled accounts receivable represent revenues recognized on contracts to be billed, in subsequent periods, as per the terms of the related contracts.
Short-Term Financial Assets And Liabilities	Short-term Financial Assets and Liabilities. Cash and certain cash equivalents, trade receivables, accounts payable and other accrued liabilities are short-term in nature and, accordingly, their carrying values approximate fair value.
Property And Equipment	Property and Equipment . Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is calculated on a straight-line basis over the estimated useful lives of the assets. Leasehold improvements are amortized on a straight-line basis over the shorter of the term of the lease or the estimated useful life of the improvement. In India, leasehold land is leased by us from the government of India with lease terms ranging up to 99 years . Lease payments are made at the inception of the lease agreement and amortized over the lease term. Maintenance and repairs are expensed as incurred, while renewals and betterments are capitalized. Deposits paid towards acquisition of long-lived assets and the cost of assets not put in use before the balance sheet date are disclosed under the caption “capital work-in-progress” in Note 4.
Internal Use Software	Internal Use Software . We capitalize certain costs that are incurred to purchase, develop and implement internal-use software during the application development phase, which primarily include coding, testing and certain data conversion activities. Capitalized costs are amortized on a straight-line basis over the useful life of the software. Costs incurred in performing activities associated with the preliminary project phase and the post-implementation phase are expensed as incurred.
Business Combinations	Business Combinations . We account for business combinations using the acquisition method, which requires the identification of the acquirer, the determination of the acquisition date and the allocation of the purchase price paid by the acquirer to the identifiable tangible and intangible assets acquired, the liabilities assumed and any noncontrolling interest in the acquiree at their acquisition date fair values. Goodwill represents the excess of the purchase price over the fair value of net assets acquired, including the amount assigned to identifiable intangible assets. Identifiable intangible assets with finite lives are amortized over their useful lives. Acquisition-related costs are expensed in the periods in which the costs are incurred. The results of operations of acquired businesses are included in our consolidated financial statements from the acquisition date .
Long-Lived Assets And Finite-Lived Intangibles	Long-lived Assets and Finite-lived Intangibles . We review long-lived assets and certain finite-lived identifiable intangibles for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. We recognize an impairment loss when the sum of undiscounted expected future cash flows is less than the carrying amount of such assets. The impairment loss would equal the amount by which the carrying amount of the asset exceeds the fair value of the asset. Intangible assets consist primarily of customer relationships and developed technology, which are being amortized on a straight-line basis over their estimated useful lives.
Goodwill and Indefinite-Lived intangibles	Goodwill and Indefinite-lived Intangibles . We evaluate goodwill and indefinite-lived intangible assets for impairment at least annually, or as circumstances warrant. Goodwill is evaluated at the reporting unit level by comparing the fair value of the reporting unit with its carrying amount. For indefinite-lived intangible assets, if our annual qualitative assessment indicates possible impairment, we test the assets for impairment by comparing the fair value of such assets to their carrying value. In determining the fair value, we utilize various estimates and assumptions, including discount rates and projections of future cash flows. If an impairment is indicated, a write down to the implied fair value of goodwill or fair value of indefinite-lived intangible asset is recorded.
Stock Repurchase Program	Stock Repurchase Program. Our existing stock repurchase program, as amended and approved by our Board of Directors, allows for the repurchase of $2,000.0 million of our outstanding shares of Class A common stock and expires on December 31, 2017. Through December 31, 2015 , we completed stock repurchases of 41.2 million shares for $1,562.4 million, inclusive of fees and expenses, under this program. During 2015 , 2014 and 2013 , we repurchased 6.0 million , 3.8 million and 4.1 million shares respectively, at an aggregate cost of $376.0 million , $188.2 million and $131.6 million, respectively. Additional stock repurchases were made in connection with our stock-based compensation plans, whereby Company shares were tendered by employees for payment of applicable statutory tax withholdings. During 2015 , 2014 and 2013 such repurchases totaled 1.3 million, 1.2 million and 1.2 million shares, respectively, at an aggregate cost of $84.0 million, $60.1 million and $47.4 million, respectively. At the time of repurchase, shares are returned to the status of authorized and unissued shares. We account for the repurchases as constructively retired and record such repurchases as a reduction of Class A common stock and additional paid-in capital.
Revenue Recognition	Revenue Recognition . Revenues related to time-and-material contracts are recognized as the service is performed and amounts are earned. Revenues from transaction-priced contracts are recognized as transactions are processed and amounts are earned. Revenues related to fixed-price contracts for highly complex application development and systems integration services are recognized as the service is performed using the percentage of completion method of accounting, under which the total value of revenue is recognized on the basis of the percentage that each contract’s total labor cost to date bears to the total expected labor costs (cost to cost method). Revenues related to fixed price outsourcing services are recognized on a straight-line basis unless revenues are earned and obligations are fulfilled in a different pattern. Revenues related to fixed-price contracts for consulting or other IT services are recognized as services are performed on a proportional performance basis based upon the level of effort. For all services, revenue is earned and recognized only when all of the following criteria are met: evidence of an arrangement exists, the price is fixed or determinable, the services have been rendered and collectibility is reasonably assured. Contingent or incentive revenues are recognized when the contingency is satisfied and we conclude the amounts are earned. Volume discounts are recorded as a reduction of revenue over the contract period as services are provided. Revenues also include the reimbursement of out-of-pocket expenses. Costs to deliver services are expensed as incurred with the exception of specific costs directly related to transition or set-up activities for outsourcing contracts. Transition costs are deferred and expensed ratably over the period of service. Generally, deferred amounts are protected by collected cash or early termination penalty clauses and are monitored regularly for impairment. Impairment losses are recorded when projected remaining undiscounted operating cash flows of the related contract are not sufficient to recover the carrying amount of the contract assets. Deferred transition costs were approximately $ 137.4 million and $ 98.2 million as of December 31, 2015 and 2014 , respectively, and are included in other noncurrent assets in our consolidated statements of financial position. Costs related to warranty provisions are accrued at the time the related revenues are recorded. We may enter into arrangements that consist of multiple elements. Such arrangements may include any combination of our consulting and technology services and outsourcing services. For arrangements with multiple deliverables, we evaluate at the inception of each new arrangement all deliverables to determine whether they represent separate units of accounting. For arrangements with multiple units of accounting, other than arrangements that contain software licenses and software-related services, we allocate consideration among the units of accounting, where separable, based on their relative selling price. Relative selling price is determined based on vendor-specific objective evidence, or VSOE, if it exists. Otherwise, third-party evidence of selling price is used, when it is available, and in circumstances when neither VSOE nor third-party evidence of selling price is available, management’s best estimate of selling price is used. Revenue is recognized for each unit of accounting based on our revenue recognition policy described above. Fixed-price contracts are generally cancelable subject to a specified notice period. All services provided by us through the date of cancellation are due and payable under the contract terms. We issue invoices related to fixed-price contracts based upon achievement of milestones during a project or other contractual terms. Differences between the timing of billing, based on contract milestones or other contractual terms, and the recognition of revenue are recognized as either unbilled receivables or deferred revenue. Estimates of certain fixed-price contracts are subject to adjustment as a project progresses to reflect changes in expected completion costs or efforts. The cumulative impact of any revision in estimates is reflected in the financial reporting period in which the change in estimate becomes known and any anticipated losses on contracts are recognized immediately. We also generate product revenue from licensing our software. For perpetual software license arrangements that do not require significant modification or customization of the underlying software, revenue is recognized when the software is delivered and all other software revenue recognition criteria are met. For software license arrangements that require significant functionality enhancements or modification of the software, revenue for the software license and those services is recognized as those services are performed. For software license arrangements that include a right to use the product for a defined period of time, we recognize revenue ratably over the term of the license. We may enter into arrangements with customers that purchase both software licenses and software-related services from us at the same time, or within close proximity of one another (referred to as software-related multiple-element arrangements). Such software related multiple-element arrangements may include software licenses, software license updates, product support contracts and other software-related services. For those software related multiple-element arrangements, we apply the residual method to determine the amount of software license revenue. Under the residual method, if VSOE of fair value exists for undelivered elements in a multiple-element arrangement, revenue equal to the fair value of the undelivered elements is deferred with the remaining portion of the arrangement consideration generally recognized upon delivery of the software license. For arrangements in which VSOE of fair value does not exist for each software-related undelivered element, revenue for the software license is deferred and not recognized until VSOE of fair value is available for the undelivered element or delivery of each element has occurred. If the only undelivered element is a service, revenue from the delivered element is recognized over the service period. We also enter into multiple-element arrangements that may include a combination of software licenses and various software-related and non-software-related services. In such arrangements, we first allocate the total arrangement consideration, based on relative selling prices, between the software group of elements and the non-software group of elements. We then further allocate consideration within the software group to the respective elements within that group following the software-related multiple-element arrangements policies described above. For the non-software group of elements, we further allocate consideration to the respective elements based on relative selling prices. After the arrangement consideration has been allocated to the individual elements, we account for each respective element in the arrangement as described above.
Stock-Based Compensation	Stock-Based Compensation. Stock-based compensation expense for awards of equity instruments to employees and non-employee directors is determined based on the grant-date fair value of those awards. We recognize these compensation costs net of an estimated forfeiture rate over the requisite service period of the award. Forfeitures are estimated on the date of grant and revised if actual or expected forfeiture activity differs materially from original estimates.
Foreign Currency	Foreign Currency . The assets and liabilities of our foreign subsidiaries whose functional currency is not the U.S. dollar are translated into U.S. dollars from local currencies at current exchange rates and revenues and expenses are translated from local currencies at average monthly exchange rates. The resulting translation adjustments are recorded in accumulated other comprehensive income (loss) on the accompanying consolidated statements of financial position. Foreign currency transactions and balances are those that are denominated in a currency other than the subsidiary’s functional currency. The U.S. dollar is the functional currency for certain foreign subsidiaries who conduct business predominantly in U.S. dollars. For these subsidiaries, transactions and balances denominated in the local currency are foreign currency transactions. Foreign currency transactions and balances related to non-monetary assets and liabilities are remeasured to the functional currency of the subsidiary at historical exchange rates while monetary assets and liabilities are remeasured to the functional currency of the subsidiary at current exchange rates. Foreign currency exchange gains or losses from remeasurement are included in the "Foreign currency exchange gain (losses), net" line on our consolidated statement of operations together with gains or losses on our undesignated foreign currency hedges.
Derivative Financial Instruments	Derivative Financial Instruments. Derivative financial instruments are accounted for in accordance with the authoritative guidance which requires that each derivative instrument be recorded on the balance sheet as either an asset or liability measured at its fair value as of the reporting date. Our derivative financial instruments consist of foreign exchange forward contracts. For derivative financial instruments to qualify for hedge accounting, the following criteria must be met: (1) the hedging instrument must be designated as a hedge; (2) the hedged exposure must be specifically identifiable and must expose us to risk; and (3) it is expected that a change in fair value of the derivative financial instrument and an opposite change in the fair value of the hedged exposure will have a high degree of correlation. The authoritative guidance requires that changes in our derivatives’ fair values be recognized in income unless specific hedge accounting and documentation criteria are met (i.e., the instruments are accounted for as hedges). We record the effective portion of the unrealized gains and losses on our derivative financial instruments that are designated as cash flow hedges in accumulated other comprehensive income (loss) in the accompanying consolidated statements of financial position. Any ineffectiveness or excluded portion of a designated cash flow hedge is recognized in income. Upon settlement or maturity of the cash flow hedge contracts, the realized gains and losses are recognized in income.
Use Of Estimates	Use of Estimates . The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, including the recoverability of tangible and intangible assets, disclosure of contingent assets and liabilities as of the date of the financial statements, and the reported amounts of revenues and expenses during the period. The most significant estimates relate to the recognition of revenue and profits based on the percentage of completion method of accounting for certain fixed-bid contracts, the allowance for doubtful accounts, income taxes, assumptions used in valuing stock-based compensation arrangements, valuation of derivative financial instruments and investments, business combinations, intangible assets and other long-lived assets, valuation of goodwill, contingencies and litigation. We evaluate our estimates on a continuous basis. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. The actual amounts may vary from the estimates used in the preparation of the accompanying consolidated financial statements.
Risks And Uncertainties	Risks and Uncertainties . The majority of our development and delivery centers and employees are located in India. As a result, we may be subject to certain risks associated with international operations, including risks associated with foreign currency exchange rate fluctuations and risks associated with the application and imposition of protective legislation and regulations relating to import and export or otherwise resulting from foreign policy or the variability of foreign economic or political conditions. Additional risks associated with international operations include difficulties in enforcing intellectual property rights, the burdens of complying with a wide variety of foreign laws, potential geo-political and other risks associated with terrorist activities and local or cross border conflicts and potentially adverse tax consequences, tariffs, quotas and other barriers.
Concentration Of Credit Risk	Concentration of Credit Risk . Financial instruments that potentially subject us to significant concentrations of credit risk consist primarily of cash and cash equivalents, time deposits, investments in securities, derivative financial instruments and billed and unbilled accounts receivable. We maintain our cash and cash equivalents, investments and derivative financial instruments with high credit quality financial institutions, invest in investment-grade debt securities and limit the amount of credit exposure to any one commercial issuer. Our accounts receivable are dispersed across many customers operating in different industries; therefore, concentration of credit risk is limited.
Income Taxes	Income Taxes. We provide for income taxes utilizing the asset and liability method of accounting. Under this method, deferred income taxes are recorded to reflect the tax consequences in future years of differences between the tax basis of assets and liabilities and their financial reporting amounts at each balance sheet date, based on enacted tax laws and statutory tax rates applicable to the periods in which the differences are expected to affect taxable income. If it is determined that it is more likely than not that future tax benefits associated with a deferred income tax asset will not be realized, a valuation allowance is provided. The effect on deferred income tax assets and liabilities of a change in the tax rates is recognized in income in the period that includes the enactment date. Tax benefits earned on exercise of employee stock options in excess of compensation charged to income are credited to additional paid-in capital. Our provision for income taxes also includes the impact of provisions established for uncertain income tax positions, as well as the related interest.
Earnings Per Share, Or EPS	Earnings Per Share, or EPS. Basic EPS excludes dilution and is computed by dividing earnings available to common stockholders by the weighted-average number of common shares outstanding for the period. Diluted EPS includes all potential dilutive common stock in the weighted average shares outstanding. For purposes of computing diluted earnings per share for the years ended December 31, 2015 , 2014 and 2013 , respectively, 4.2 million, 4.4 million and 5.7 million shares were assumed to have been outstanding related to common share equivalents. We exclude from the calculation of diluted EPS options with exercise prices that are greater than the average market price and shares related to stock-based awards whose combined exercise price, unamortized fair value and excess tax benefits were greater in each of those periods than the average market price of our common stock for the period, because their effect would be anti-dilutive. We excluded 0.1 million of anti-dilutive shares in 2015 , 2014 and 2013 from our diluted EPS calculation. We include performance stock unit awards in the dilutive potential common shares when they become contingently issuable per the authoritative guidance and exclude the awards when they are not contingently issuable.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncement. In November 2015, the Financial Accounting Standards Board, or FASB, issued an update to the standard on income taxes pertaining to the balance sheet classification of deferred income taxes. The update requires that all deferred income tax assets and liabilities, along with any related valuation allowance, within each tax jurisdiction be classified as noncurrent on the balance sheet. As a result, each tax jurisdiction will only have one net noncurrent deferred income tax asset or liability. This guidance is effective on either a prospective or retrospective basis for fiscal years, and interim periods within those years, beginning on or after January 1, 2017 with early adoption permitted. We elected to early adopt this guidance retrospectively in the fourth quarter of 2015. We conformed prior years' presentation to current year's presentation on our consolidated statement of financial position. There is no impact on our consolidated statement of operations. New Accounting Pronouncements. In May 2014, the FASB issued a standard on revenue from contracts with customers. The new standard sets forth a single comprehensive model for recognizing and reporting revenue. The standard also requires additional financial statement disclosures that will enable users to understand the nature, amount, timing and uncertainty of revenue and cash flows relating to customer contracts. In July 2015, the FASB deferred the effective date of the standard by one year to periods beginning on or after January 1, 2018. Early adoption is permitted but not before the original effective date of periods beginning on or after January 1, 2017. The standard allows for two methods of adoption: the full retrospective adoption, which requires the standard to be applied to each prior period presented, or the modified retrospective adoption, which requires the cumulative effect of adoption to be recognized as an adjustment to opening retained earnings in the period of adoption. We are currently evaluating the effect the new standard will have on our consolidated financial statements and related disclosures. In April 2015, the FASB issued an update to the standard on interest related to the presentation of debt issuance costs. The standard requires debt issuance costs, other than costs incurred to secure lines of credit, be presented in the balance sheet as a direct deduction from the carrying value of that debt liability. The recognition and measurement guidance for debt issuance costs are not affected by this standard. The standard is effective on a retrospective basis for fiscal years, and interim periods within those years, beginning on or after January 1, 2016. The adoption of this standard will affect financial statement presentation only and will have no effect on our financial condition or results of operations. In April 2015, the FASB issued an update to the standard on internal-use software providing guidance to customers in evaluating whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, the standard requires the customer to account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer is required to account for the arrangement as a service contract. The standard is effective for fiscal years, and interim periods within those years, beginning on or after January 1, 2016. A company can elect to adopt the amendments either prospectively to all arrangements entered into or materially modified after the effective date or retrospectively. We plan to adopt the amendments to this standard prospectively beginning January 1, 2016. We do not expect the adoption of this amendment to have a material effect on our financial condition or results of operations. In January 2016, the FASB issued an update to the standard on financial instruments. The update significantly revises an entity’s accounting related to (1) the classification and measurement of investments in equity securities and (2) the presentation of certain fair value changes for financial liabilities measured at fair value. It also amends certain disclosure requirements. The update is effective for fiscal years, and interim periods within those fiscal years, beginning on or after January 1, 2018. Upon adoption, entities will be required to make a cumulative-effect adjustment to the statement of financial position as of the beginning of the first reporting period in which the guidance is effective. However, the specific guidance on equity securities without readily determinable fair value will apply prospectively to all equity investments that exist as of the date of adoption. Early adoption of certain sections of this update is permitted. We are currently evaluating the effect the new standard will have on our consolidated financial statements and related disclosures.

Business Combinations (Tables)

Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2015
Business Acquisition [Line Items]
Supplemental schedule of noncash investing activities	In conjunction with the TriZetto acquisition, liabilities were assumed as follows: Year Ended December 31, 2014 (in millions) Fair value of assets acquired $ 3,070.7 Purchase price paid in cash (net of cash acquired) (2,627.8 ) Liabilities assumed $ 442.9
TriZetto [Member]
Business Acquisition [Line Items]
Fair value of assets acquired and liabilities assumed	Our allocation of purchase price as of November 20, 2014 (the closing date of the TriZetto acquisition) to the fair value of assets acquired and liabilities assumed was as follows: Amount (in millions) Cash $ 170.5 Trade accounts receivable 83.1 Unbilled accounts receivable 32.5 Other current assets 11.2 Property and equipment 124.0 Identifiable intangible assets 849.0 Other noncurrent assets 14.8 Accounts payable (12.5 ) Deferred revenue (48.3 ) Accrued expenses and other current liabilities (118.3 ) Other noncurrent liabilities (54.8 ) Deferred income tax liabilities, net (209.0 ) Goodwill 1,956.1 Total purchase price $ 2,798.3
Schedule of intangible assets acquired as part of business combination	The fair value of the identifiable intangible assets and their weighted-average useful lives at the time of acquisition were as follows: Fair Value Weighted Average Useful Life (Dollars in millions) Corporate trademark $ 63.0 Indefinite Product trademarks 21.0 16.9 years Technology 328.0 7.7 years Customer relationships 437.0 15.8 years Total $ 849.0
Schedule of pro forma information	The following unaudited pro forma information reflecting the combined operating results of Cognizant and TriZetto for the years ended December 31, 2014 and 2013 assumes the TriZetto acquisition occurred on January 1, 2013. Such pro forma information does not reflect the potential realization of cost savings relating to the integration of TriZetto. Further, the pro forma information is not indicative of the combined results of operations that actually would have occurred had the TriZetto acquisition been completed on January 1, 2013 nor is it intended to be a projection of future operating results. Unaudited Pro Forma Information For the Years Ended December 31, 2014 December 31, 2013 (in millions) Revenues $ 10,893.0 $ 9,519.6 Income from operations 1,959.5 1,253.2
Other acquisitions [Member]
Business Acquisition [Line Items]
Schedule of intangible assets acquired as part of business combination	We have allocated the purchase price related to these transactions to tangible and intangible assets and liabilities, including goodwill, based on their fair values on their respective dates of acquisition, as follows: 2014 2013 Fair Value Useful Life Fair Value Useful Life (Dollars in millions) Total initial consideration, net of cash acquired $ 46.2 $ 184.2 Purchase price allocated to: Non-deductible goodwill 30.9 129.9 Customer relationship intangible assets 12.1 3-10 years 58.6 5-10 years Other intangible assets 4.3 1-4 years 7.2 1-5 years

Short-term Investments (Tables)

Short-term Investments (Tables)	12 Months Ended
	Dec. 31, 2015
Investments [Abstract]
Schedule of short-term investments	Our short-term investments were as follows as of December 31: 2015 2014 (in millions) Available-for-sale investment securities: U.S. Treasury and agency debt securities $ 527.1 $ 544.7 Corporate and other debt securities 360.5 358.6 Certificates of deposit and commercial paper 754.0 4.6 Asset-backed securities 229.6 220.1 Municipal debt securities 121.3 112.8 Mutual funds 22.3 21.9 Total available-for-sale investment securities 2,014.8 1,262.7 Time deposits 809.5 501.9 Total short-term investments $ 2,824.3 $ 1,764.6
Amortized Cost, Gross Unrealized Gains And Losses And Fair Value Of Investment Securities Available-For-Sale	The amortized cost, gross unrealized gains and losses and fair value of available-for-sale investment securities were as follows at December 31: 2015 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in millions) U.S. Treasury and agency debt securities $ 528.9 $ — $ (1.8 ) $ 527.1 Corporate and other debt securities 361.9 0.1 (1.5 ) 360.5 Certificates of deposit and commercial paper 754.0 0.1 (0.1 ) 754.0 Asset-backed securities 230.3 0.1 (0.8 ) 229.6 Municipal debt securities 121.2 0.2 (0.1 ) 121.3 Mutual funds 25.3 0.1 (3.1 ) 22.3 Total available-for-sale investment securities $ 2,021.6 $ 0.6 $ (7.4 ) $ 2,014.8 2014 Amortized Cost Unrealized Gains Unrealized Losses Fair Value (in millions) U.S. Treasury and agency debt securities $ 544.7 $ 0.4 $ (0.4 ) $ 544.7 Corporate and other debt securities 359.0 0.3 (0.7 ) 358.6 Certificates of deposit and commercial paper 4.6 — — 4.6 Asset-backed securities 220.4 0.1 (0.4 ) 220.1 Municipal debt securities 112.5 0.4 (0.1 ) 112.8 Mutual funds 23.9 0.3 (2.3 ) 21.9 Total available-for-sale investment securities $ 1,265.1 $ 1.5 $ (3.9 ) $ 1,262.7
Available-For-Sale Securities In A Continuous Unrealized Loss Position	The fair value and related unrealized losses of available-for-sale investment securities in a continuous unrealized loss position for less than 12 months and for 12 months or longer were as follows as of December 31: 2015 Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in millions) U.S. Treasury and agency debt securities $ 475.7 $ (1.8 ) $ — $ — $ 475.7 $ (1.8 ) Corporate and other debt securities 315.1 (1.5 ) 3.1 — 318.2 (1.5 ) Certificates of deposit and commercial paper 271.5 (0.1 ) — — 271.5 (0.1 ) Asset-backed securities 199.4 (0.7 ) 11.4 (0.1 ) 210.8 (0.8 ) Municipal debt securities 56.5 (0.1 ) — — 56.5 (0.1 ) Mutual funds — — 21.1 (3.1 ) 21.1 (3.1 ) Total $ 1,318.2 $ (4.2 ) $ 35.6 $ (3.2 ) $ 1,353.8 $ (7.4 ) 2014 Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (in millions) U.S. Treasury and agency debt securities $ 256.9 $ (0.4 ) $ — $ — $ 256.9 $ (0.4 ) Corporate and other debt securities 229.7 (0.7 ) — — 229.7 (0.7 ) Certificates of deposit and commercial paper 3.7 — — — 3.7 — Asset-backed securities 151.9 (0.3 ) 2.8 (0.1 ) 154.7 (0.4 ) Municipal debt securities 28.0 (0.1 ) — — 28.0 (0.1 ) Mutual funds — — 20.7 (2.3 ) 20.7 (2.3 ) Total $ 670.2 $ (1.5 ) $ 23.5 $ (2.4 ) $ 693.7 $ (3.9 )
Contractual Maturities Of Investments In Debt Securities Available-For-Sale	The contractual maturities of our fixed income available-for-sale investment securities as of December 31, 2015 are set forth in the following table: Amortized Cost Fair Value (in millions) Due within one year $ 806.4 $ 806.5 Due after one year up to two years 536.6 535.1 Due after two years up to three years 404.9 403.3 Due after three years up to four years 18.1 18.0 Asset-backed securities 230.3 229.6 Fixed income available-for-sale investment securities $ 1,996.3 $ 1,992.5
Gross Gains (Losses) Realized On Sales, Maturities And Other Securities Transactions Related To Investment Securities	Proceeds from sales of available-for-sale investment securities and the gross gains and losses that have been included in earnings as a result of those sales were as follows: 2015 2014 2013 (in millions) Proceeds from sales of available-for-sale investment securities $ 781.9 $ 1,475.6 $ 1,119.8 Gross gains $ 1.4 $ 2.2 $ 2.0 Gross losses (0.5 ) (0.4 ) (0.6 ) Net realized gains on sales of available-for-sale investment securities $ 0.9 $ 1.8 $ 1.4

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2015
Property, Plant and Equipment, Net [Abstract]
Schedule of property and equipment	Property and equipment were as follows as of December 31: Estimated Useful Life (Years) 2015 2014 (in millions) Buildings 30 $ 804.9 $ 605.0 Computer equipment and software 3 696.9 537.3 Furniture and equipment 5 – 9 384.5 322.6 Land 22.6 22.6 Leasehold land lease term 63.4 60.1 Capital work-in-progress 114.9 304.7 Leasehold improvements Shorter of the lease term or the life of the leased asset 263.3 247.0 Sub-total 2,350.5 2,099.3 Accumulated depreciation and amortization (1,079.1 ) (852.1 ) Property and equipment, net $ 1,271.4 $ 1,247.2

Goodwill and Intangible Asset29

Goodwill and Intangible Assets, net (Tables)	12 Months Ended
	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule Of Goodwill	Changes in goodwill by our reportable segments were as follows for the years ended December 31, 2015 and 2014 : Segment January 1, 2015 Goodwill Additions Foreign Currency Translation Adjustments December 31, 2015 (in millions) Financial Services $ 204.5 $ 5.5 $ (7.3 ) $ 202.7 Healthcare 2,079.9 — (3.5 ) 2,076.4 Manufacturing/Retail/Logistics 69.2 — (2.3 ) 66.9 Other 60.0 — (1.3 ) 58.7 Total goodwill $ 2,413.6 $ 5.5 $ (14.4 ) $ 2,404.7 Segment January 1, 2014 Goodwill Additions Foreign Currency Translation Adjustments December 31, 2014 (in millions) Financial Services $ 208.6 $ 4.0 $ (8.1 ) $ 204.5 Healthcare 107.4 1,976.9 (4.4 ) 2,079.9 Manufacturing/Retail/Logistics 71.6 0.7 (3.1 ) 69.2 Other 56.6 5.4 (2.0 ) 60.0 Total goodwill $ 444.2 $ 1,987.0 $ (17.6 ) $ 2,413.6
Schedule of Finite-Lived Intangible Assets	Components of intangible assets were as follows as of December 31: 2015 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in millions) Customer relationships $ 650.3 $ (157.6 ) $ 492.7 Developed technology 332.1 (52.5 ) 279.6 Indefinite life trademarks 63.0 — 63.0 Other 45.1 (16.1 ) 29.0 Total intangible assets $ 1,090.5 $ (226.2 ) $ 864.3 2014 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in millions) Customer relationships $ 644.4 $ (112.2 ) $ 532.2 Developed technology 332.1 (8.7 ) 323.4 Indefinite life trademarks 63.0 — 63.0 Other 45.8 (10.7 ) 35.1 Total intangible assets $ 1,085.3 $ (131.6 ) $ 953.7
Schedule of Indefinite-Lived Intangible Assets	Components of intangible assets were as follows as of December 31: 2015 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in millions) Customer relationships $ 650.3 $ (157.6 ) $ 492.7 Developed technology 332.1 (52.5 ) 279.6 Indefinite life trademarks 63.0 — 63.0 Other 45.1 (16.1 ) 29.0 Total intangible assets $ 1,090.5 $ (226.2 ) $ 864.3 2014 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in millions) Customer relationships $ 644.4 $ (112.2 ) $ 532.2 Developed technology 332.1 (8.7 ) 323.4 Indefinite life trademarks 63.0 — 63.0 Other 45.8 (10.7 ) 35.1 Total intangible assets $ 1,085.3 $ (131.6 ) $ 953.7
Schedule Of Estimated Amortization Expense	Estimated amortization expense related to our existing intangible assets for the next five years is as follows: Year Amount (in millions) 2016 $ 96.1 2017 93.2 2018 85.8 2019 83.5 2020 76.3

Accrued Expenses and Other Cu30

Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2015
Accrued Expenses And Other Current Liabilities [Abstract]
Accrued Expenses And Other Current Liabilities	Accrued expenses and other current liabilities were as follows as of December 31: 2015 2014 (in millions) Compensation and benefits $ 1,272.0 $ 906.8 Income taxes 17.1 23.8 Professional fees 69.6 82.7 Travel and entertainment 29.8 35.0 Customer volume incentives 236.1 192.1 Derivative financial instruments 10.9 97.3 Other 182.9 184.6 Total accrued expenses and other current liabilities $ 1,818.4 $ 1,522.3

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Schedule of short-term debt	The following summarizes our short-term debt balances as of December 31: 2015 2014 (in millions) Notes drawn under revolving credit facility $ 350.0 $ 650.0 Term loan - current maturities 56.3 50.0 Total short-term debt $ 406.3 $ 700.0
Schedule of long-term debt	The following summarizes our long-term debt balances as of December 31: 2015 2014 (in millions) Term loan, due 2019 $ 937.5 $ 987.5 Less: current maturities (56.3 ) (50.0 ) Long-term debt, net of current maturities $ 881.2 $ 937.5
Schedule of debt maturities	The following represents the schedule of maturities of long-term debt: Year Amounts (in millions) 2016 56.3 2017 81.2 2018 100.0 2019 700.0 $ 937.5

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Schedule Of Income Before Provision For Income Tax	Income before provision for income taxes shown below is based on the geographic location to which such income is attributed for years ended December 31: 2015 2014 2013 (in millions) United States $ 738.5 $ 589.2 $ 540.7 Foreign 1,425.1 1,334.8 1,147.2 Income before provision for income taxes $ 2,163.6 $ 1,924.0 $ 1,687.9
Schedule Of Components Of Provision For Income Taxes	The provision for income taxes consists of the following components for the years ended December 31: 2015 2014 2013 (in millions) Current: Federal and state $ 351.8 $ 260.2 $ 270.0 Foreign 314.3 324.1 277.5 Total current 666.1 584.3 547.5 Deferred: Federal and state (58.1 ) (20.2 ) (37.1 ) Foreign (68.0 ) (79.4 ) (51.1 ) Total deferred (126.1 ) (99.6 ) (88.2 ) Total provision for income taxes $ 540.0 $ 484.7 $ 459.3
Reconciliation Between Effective Income Tax Rate and U.S. Federal Statutory Rate	The reconciliation between our effective income tax rate and the U.S. federal statutory rate were as follows for the years ended December 31: 2015 % 2014 % 2013 % (Dollars in millions) Tax expense, at U.S. federal statutory rate $ 757.3 35.0 $ 673.4 35.0 $ 590.8 35.0 State and local income taxes, net of federal benefit 42.4 2.0 34.5 1.8 33.1 2.0 Non-taxable income for Indian tax purposes (201.4 ) (9.3 ) (183.0 ) (9.5 ) (146.3 ) (8.7 ) Rate differential on foreign earnings (34.0 ) (1.6 ) (31.8 ) (1.7 ) (24.6 ) (1.5 ) Other (24.3 ) (1.1 ) (8.4 ) (0.4 ) 6.3 0.4 Total provision for income taxes $ 540.0 25.0 $ 484.7 25.2 $ 459.3 27.2
Schedule Of Deferred Tax Assets and Liabilities	The significant components of deferred income tax assets and liabilities recorded on the consolidated statements of financial position were as follows as of December 31: 2015 2014 (in millions) Deferred income tax assets: Net operating losses $ 5.9 $ 10.0 Revenue recognition 72.1 56.5 Compensation and benefits 194.0 145.6 Stock-based compensation 26.1 22.5 Minimum alternative tax (MAT) and other credits 219.1 184.2 Other accrued expenses 110.6 101.7 Other 2.9 15.1 630.7 535.6 Less: valuation allowance (10.4 ) (11.4 ) Deferred income tax assets, net 620.3 524.2 Deferred income tax liabilities: Depreciation and amortization 23.9 21.2 Intangible assets 251.9 280.6 Deferred income tax liabilities 275.8 301.8 Net deferred income tax assets $ 344.5 $ 222.4
Summary Of Changes in Unrecognized Tax Benefits	Changes in unrecognized income tax benefits were as follows for the years ended December 31: 2015 2014 (in millions) Balance, beginning of year $ 135.6 $ 96.6 Additions based on tax positions related to the current year 20.7 7.8 Additions for tax positions of prior years 6.5 5.9 Additions for tax positions of acquired subsidiaries — 29.2 Reductions for tax positions due to lapse of statutes of limitations (23.1 ) — Reductions for tax positions of prior years — — Settlements — — Foreign currency exchange movement (1.0 ) (3.9 ) Balance, end of year $ 138.7 $ 135.6

Derivative Financial Instrume33

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Location And Fair Values Of Derivative Financial Instruments In Our Condensed Consolidated Statements Of Financial Position	The following table provides information on the location and fair values of derivative financial instruments included in our consolidated statement of financial position as of December 31: 2015 2014 Designation of Derivatives Location on Statement of Financial Position Assets Liabilities Assets Liabilities (in millions) Cash Flow Hedges – Designated as hedging instruments Foreign exchange forward contracts Other current assets $ 7.2 $ — $ 0.7 $ — Other noncurrent assets 1.6 — 3.9 — Accrued expenses and other current liabilities — 9.7 — 97.2 Other noncurrent liabilities — 13.5 — 10.0 Total 8.8 23.2 4.6 107.2 Other Derivatives – Not designated as hedging instruments Foreign exchange forward contracts Other current assets 0.4 — 2.0 — Accrued expenses and other current liabilities — 1.2 — 0.1 Total 0.4 1.2 2.0 0.1 Total $ 9.2 $ 24.4 $ 6.6 $ 107.3
Notional Value Of Outstanding Cash Flow Hedge Contracts By Year Of Maturity And Net Unrealized (Loss) Gain Included In Accumulated Other Comprehensive Income (Loss)	The notional value of our outstanding contracts by year of maturity and the net unrealized (loss) included in accumulated other comprehensive income (loss) for such contracts were as follows as of December 31: 2015 2014 (in millions) 2015 $ — $ 1,320.0 2016 1,215.0 720.0 2017 900.0 420.0 2018 330.0 — Total notional value of contracts outstanding $ 2,445.0 $ 2,460.0 Net unrealized (loss) included in accumulated other comprehensive income (loss), net of taxes $ (11.7 ) $ (86.7 )
Location And Amounts Of Pre-Tax Gains (Losses) On Cash Flow Hedge Derivative Financial Instruments	The following table provides information on the location and amounts of pre-tax (losses) on our cash flow hedges for the year ended December 31: Decrease (Increase) in Derivative Losses Recognized in Accumulated Other Comprehensive Income (Loss) (effective portion) Location of Net Derivative (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion) Net (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion) 2015 2014 2015 2014 (in millions) Cash Flow Hedges – Designated as hedging instruments Foreign exchange forward contracts $ 17.0 $ 115.7 Cost of revenues $ (59.3 ) $ (113.4 ) Selling, general and administrative expenses (11.9 ) (23.2 ) Total $ (71.2 ) $ (136.6 )
Additional Information Related To Outstanding Contracts Not Designated As Hedging Instruments	Additional information related to our outstanding contracts is as follows as of December 31: 2015 2014 Notional Market Value Notional Market Value (in millions) Contracts to purchase U.S. dollars and sell: Indian rupees $ 150.7 $ (0.6 ) $ 160.0 $ 1.8 Euros 5.3 (0.1 ) 24.4 0.2 British pounds — — 17.9 — Australian dollars 8.2 (0.1 ) 9.6 (0.1 ) Canadian dollars 1.3 — 3.7 — Total $ 165.5 $ (0.8 ) $ 215.6 $ 1.9
Location And Amounts Of Pre-Tax Gains (Losses) On Derivative Financial Instruments Not Designated As Hedges	The following table provides information on the location and amounts of realized and unrealized pre-tax gains and losses on our other derivative financial instruments for the year ended December 31: Location of Net Gains (Losses) on Derivative Instruments Amount of Net Gains (Losses) on Derivative Instruments 2015 2014 (in millions) Other Derivatives – Not designated as hedging instruments Foreign currency exchange gains (losses), net Foreign exchange forward contracts $ 0.3 $ (3.9 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Financial Assets And (Liabilities) Measured At Fair Value On A Recurring Basis	The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of December 31, 2015 : Level 1 Level 2 Level 3 Total (in millions) Cash equivalents: Money market funds $ 495.9 $ — $ — $ 495.9 Total cash equivalents 495.9 — — 495.9 Short-term investments: Time deposits — 809.5 — 809.5 Available-for-sale investment securities: U.S. Treasury and agency debt securities 463.7 63.4 — 527.1 Corporate and other debt securities — 360.5 — 360.5 Certificates of deposit and commercial paper — 754.0 — 754.0 Asset-backed securities — 229.6 — 229.6 Municipal debt securities — 121.3 — 121.3 Mutual funds — 22.3 — 22.3 Total available-for-sale investment securities 463.7 1,551.1 — 2,014.8 Total short-term investments 463.7 2,360.6 — 2,824.3 Derivative financial instruments - foreign exchange forward contracts: Other current assets — 7.6 — 7.6 Accrued expenses and other current liabilities — (10.9 ) — (10.9 ) Other noncurrent assets — 1.6 — 1.6 Other noncurrent liabilities — (13.5 ) — (13.5 ) Total $ 959.6 $ 2,345.4 $ — $ 3,305.0 The following table summarizes our financial assets and (liabilities) measured at fair value on a recurring basis as of December 31, 2014 : Level 1 Level 2 Level 3 Total (in millions) Cash equivalents: Money market funds $ 176.5 $ — $ — $ 176.5 Commercial paper — 7.4 — 7.4 Total cash equivalents 176.5 7.4 — 183.9 Short-term investments: Time deposits — 501.9 — 501.9 Available-for-sale investment securities: U.S. Treasury and agency debt securities 426.8 117.9 — 544.7 Corporate and other debt securities — 358.6 — 358.6 Certificates of deposit and commercial paper — 4.6 — 4.6 Asset-backed securities — 220.1 — 220.1 Municipal debt securities — 112.8 — 112.8 Mutual funds — 21.9 — 21.9 Total available-for-sale investment securities 426.8 835.9 — 1,262.7 Total short-term investments 426.8 1,337.8 — 1,764.6 Derivative financial instruments - foreign exchange forward contracts: Other current assets — 2.7 — 2.7 Accrued expenses and other current liabilities — (97.3 ) — (97.3 ) Other noncurrent assets — 3.9 — 3.9 Other noncurrent liabilities — (10.0 ) — (10.0 ) Total $ 603.3 $ 1,244.5 $ — $ 1,847.8

Accumulated Other Comprehensi35

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule Of Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive income (loss) by component were as follows for the year ended December 31, 2015 : 2015 Before Tax Amount Tax Effect Net of Tax Amount (in millions) Foreign currency translation adjustments: Beginning balance $ (34.8 ) $ — $ (34.8 ) Change in foreign currency translation adjustments (55.1 ) — (55.1 ) Ending balance $ (89.9 ) $ — $ (89.9 ) Unrealized (losses) on available-for-sale investment securities: Beginning balance $ (2.4 ) $ 0.8 $ (1.6 ) Net unrealized (losses) arising during the period (3.5 ) 0.8 (2.7 ) Reclassification of net (gains) to Other, net (0.9 ) 0.6 (0.3 ) Net change (4.4 ) 1.4 (3.0 ) Ending balance $ (6.8 ) $ 2.2 $ (4.6 ) Unrealized (losses) on cash flow hedges: Beginning balance $ (102.6 ) $ 15.9 $ (86.7 ) Unrealized gains arising during the period 17.0 (0.3 ) 16.7 Reclassifications of losses to: Cost of revenues 59.3 (10.8 ) 48.5 Selling, general and administrative expenses 11.9 (2.1 ) 9.8 Net change 88.2 (13.2 ) 75.0 Ending balance $ (14.4 ) $ 2.7 $ (11.7 ) Accumulated other comprehensive income (loss): Beginning balance $ (139.8 ) $ 16.7 $ (123.1 ) Other comprehensive income (loss) 28.7 (11.8 ) 16.9 Ending balance $ (111.1 ) $ 4.9 $ (106.2 ) Changes in accumulated other comprehensive income (loss) by component were as follows for the years ended December 31, 2014 and 2013 : 2014 2013 Before Tax Amount Tax Effect Net of Tax Amount Before Tax Tax Net of Tax (in millions) Foreign currency translation adjustments: Beginning balance $ 24.0 $ — $ 24.0 $ 11.5 $ — $ 11.5 Change in foreign currency translation adjustments (58.8 ) — (58.8 ) 12.5 — 12.5 Ending balance $ (34.8 ) $ — $ (34.8 ) $ 24.0 $ — $ 24.0 Unrealized (losses) gains on available-for-sale investment securities: Beginning balance $ (0.5 ) $ 0.2 $ (0.3 ) $ 2.5 $ (0.9 ) $ 1.6 Net unrealized (losses) arising during the period (0.1 ) — (0.1 ) (1.7 ) 0.6 (1.1 ) Reclassification of net (gains) to Other, net (1.8 ) 0.6 (1.2 ) (1.3 ) 0.5 (0.8 ) Net change (1.9 ) 0.6 (1.3 ) (3.0 ) 1.1 (1.9 ) Ending balance $ (2.4 ) $ 0.8 $ (1.6 ) $ (0.5 ) $ 0.2 $ (0.3 ) Unrealized (losses) on cash flow hedges: Beginning balance $ (354.9 ) $ 54.9 $ (300.0 ) $ (296.6 ) $ 43.8 $ (252.8 ) Unrealized gains (losses) arising during the period 115.7 (17.9 ) 97.8 (221.3 ) 36.2 (185.1 ) Reclassifications of net losses to: Cost of revenues 113.4 (17.5 ) 95.9 135.0 (20.8 ) 114.2 Selling, general and administrative expenses 23.2 (3.6 ) 19.6 28.0 (4.3 ) 23.7 Net change 252.3 (39.0 ) 213.3 (58.3 ) 11.1 (47.2 ) Ending balance $ (102.6 ) $ 15.9 $ (86.7 ) $ (354.9 ) $ 54.9 $ (300.0 ) Accumulated other comprehensive income (loss): Beginning balance $ (331.4 ) $ 55.1 $ (276.3 ) $ (282.6 ) $ 42.9 $ (239.7 ) Other comprehensive income (loss) 191.6 (38.4 ) 153.2 (48.8 ) 12.2 (36.6 ) Ending balance $ (139.8 ) $ 16.7 $ (123.1 ) $ (331.4 ) $ 55.1 $ (276.3 )

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of future minimum rental payments under non-cancelable operating leases	Future minimum rental payments on our operating leases as of December 31, 2015 are as follows: Operating lease obligation (in millions) 2016 $ 134.2 2017 117.4 2018 95.6 2019 86.2 2020 68.4 Thereafter 164.9 Total minimum lease payments $ 666.7
Schedule of future minimum payments on capital leases	Future minimum rental payments on our capital leases as of December 31, 2015 are as follows: Capital lease obligation (in millions) 2016 $ 5.4 2017 4.9 2018 4.8 2019 4.3 2020 3.9 Thereafter 31.5 Total minimum lease payments 54.8 Interest (14.6 ) Present value of minimum lease payments $ 40.2

Stock-Based Compensation Plans

Stock-Based Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2015
Share-based Compensation [Abstract]
Schedule Of Allocation Of Total Stock-Based Compensation Expense	The allocation of total stock-based compensation expense between cost of revenues and selling, general and administrative expenses as well as the related income tax benefit were as follows for the three years ended December 31: 2015 2014 2013 (in millions) Cost of revenues $ 39.5 $ 26.8 $ 19.1 Selling, general and administrative expenses 152.5 108.0 99.7 Total stock-based compensation expense $ 192.0 $ 134.8 $ 118.8 Income tax benefit $ 46.2 $ 31.4 $ 29.4
Schedule Of Assumptions Used To Calculate The Fair Value Of Option Grants	The fair values of option grants, including the Purchase Plan, were estimated at the date of grant during the years ended December 31, 2015 , 2014 , and 2013 based upon the following assumptions and were as follows: 2015 2014 2013 Dividend yield 0 % 0 % 0 % Weighted average volatility factor: Stock options 28.11 % 28.74 % 33.47 % Purchase Plan 25.78 % 24.86 % 29.17 % Weighted average expected life (in years): Stock options 4.29 3.92 3.82 Purchase Plan 0.25 0.25 0.25 Weighted average risk-free interest rate: Stock options 1.41 % 1.25 % 0.73 % Purchase Plan 0.12 % 0.02 % 0.05 % Weighted average grant date fair value: Stock options $ 16.53 $ 11.81 $ 8.65 Purchase Plan $ 9.04 $ 7.29 $ 5.87
Summary Of Activity For Stock Options	A summary of the activity for stock options granted under our stock-based compensation plans as of December 31, 2015 and changes during the year then ended is presented below: Number of Options (in millions) Weighted Average Exercise Price (in dollars) Weighted Average Remaining Life (in years) Aggregate Intrinsic Value (in millions) Outstanding at January 1, 2015 5.4 $ 17.84 Granted 0.1 65.38 Exercised (1.3 ) 15.76 Cancelled — — Expired — — Outstanding at December 31, 2015 4.2 $ 19.09 1.75 $ 170.8 Vested and expected to vest at December 31, 2015 4.2 $ 19.02 1.75 $ 170.8 Exercisable at December 31, 2015 4.1 $ 18.22 1.66 $ 170.4
Summary Of The Activity For Performance Stock Units	A summary of the activity for performance stock units granted under our stock-based compensation plans as of December 31, 2015 and changes during the year then ended is presented below. The presentation reflects the number of performance stock units at the maximum performance milestones. Number of Units (in millions) Weighted Average Grant Date Fair Value (in dollars) Unvested at January 1, 2015 3.6 $ 47.42 Granted 0.7 64.39 Vested (1.2 ) 37.69 Forfeited (0.1 ) 47.67 Reduction due to the achievement of lower than maximum performance milestones (0.5 ) 54.30 Unvested at December 31, 2015 2.5 $ 55.69
Summary Of The Activity For Restricted Stock Units	A summary of the activity for restricted stock units granted under our stock-based compensation plans as of December 31, 2015 and changes during the year then ended is presented below: Number of Units (in millions) Weighted Average Grant Date Fair Value (in dollars) Unvested at January 1, 2015 5.4 $ 48.73 Granted 2.0 63.25 Vested (2.3 ) 47.15 Forfeited (0.4 ) 50.97 Unvested at December 31, 2015 4.7 $ 55.50

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2015
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues From External Customers And Segment Operating Profit	Revenues from external customers and segment operating profit, before unallocated expenses, for the Financial Services, Healthcare, Manufacturing/Retail/Logistics, and Other reportable segments were as follows: 2015 2014 2013 (in millions) Revenues: Financial Services $ 5,002.9 $ 4,285.6 $ 3,717.6 Healthcare 3,667.5 2,689.4 2,264.8 Manufacturing/Retail/Logistics 2,343.9 2,093.6 1,868.3 Other 1,401.7 1,194.1 992.5 Total revenue $ 12,416.0 $ 10,262.7 $ 8,843.2 Segment Operating Profit: Financial Services $ 1,641.9 $ 1,320.1 $ 1,212.1 Healthcare 1,200.0 851.0 829.9 Manufacturing/Retail/Logistics 802.7 685.7 630.3 Other 453.7 391.9 318.3 Total segment operating profit 4,098.3 3,248.7 2,990.6 Less: unallocated costs 1,956.3 1,363.8 1,312.7 Income from operations $ 2,142.0 $ 1,884.9 $ 1,677.9
Revenues And Long-Lived Assets By Geographic Area	Revenue and long-lived assets, by geographic area, were as follows: 2015 2014 2013 (in millions) Revenues: (1) North America (2) $ 9,759.4 $ 7,879.8 $ 6,860.1 Europe (3) 2,008.2 1,883.6 1,579.2 Rest of World (4) 648.4 499.3 403.9 Total $ 12,416.0 $ 10,262.7 $ 8,843.2 2015 2014 2013 (in millions) Long-lived Assets: (5) North America (2) $ 242.4 $ 188.3 $ 48.4 Europe 32.2 29.8 22.7 Rest of World (4)(6) 996.8 1,029.1 1,010.1 Total $ 1,271.4 $ 1,247.2 $ 1,081.2 _____________ (1) Revenues are attributed to regions based upon customer location. (2) Substantially all relates to operations in the United States. (3) Includes revenue from operations in the United Kingdom of $1,188.5 million , $1,099.2 million and $942.6 million for the years ended 2015 , 2014 and 2013 , respectively. (4) Includes our operations in Asia Pacific, the Middle East and Latin America. (5) Long-lived assets include property and equipment, net of accumulated depreciation and amortization. (6) Substantially all of these long-lived assets relate to our operations in India.

Quarterly Financial Data (Una39

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2015
Quarterly Financial Data [Abstract]
Summary Of Quarterly Financial Data	Summarized quarterly results for the two years ended December 31, 2015 are as follows: Three Months Ended 2015 March 31 June 30 September 30 December 31 Full Year (in millions, except per share data) Revenues $ 2,911.4 $ 3,085.1 $ 3,187.0 $ 3,232.5 $ 12,416.0 Cost of revenues (exclusive of depreciation and amortization expense shown separately below) 1,727.2 1,844.8 1,934.6 1,933.6 7,440.2 Selling, general and administrative expenses 610.8 612.0 627.1 658.7 2,508.6 Depreciation and amortization expense 73.1 82.8 82.5 86.8 325.2 Income from operations 500.3 545.5 542.8 553.4 2,142.0 Net income 382.9 420.1 397.2 423.4 1,623.6 Basic EPS (1) $ 0.63 $ 0.69 $ 0.65 $ 0.70 $ 2.67 Diluted EPS (1) $ 0.62 $ 0.68 $ 0.65 $ 0.69 $ 2.65 Three Months Ended 2014 March 31 June 30 September 30 December 31 Full Year (in millions, except per share data) Revenues $ 2,422.3 $ 2,517.1 $ 2,581.0 $ 2,742.3 $ 10,262.7 Cost of revenues (exclusive of depreciation and amortization expense shown separately below) 1,432.4 1,499.5 1,569.8 1,639.4 6,141.1 Selling, general and administrative expenses 485.4 482.9 506.0 562.7 2,037.0 Depreciation and amortization expense 44.5 46.7 47.7 60.8 199.7 Income from operations 460.0 488.0 457.5 479.4 1,884.9 Net income 348.9 371.9 355.6 362.9 1,439.3 Basic EPS (1) $ 0.57 $ 0.61 $ 0.58 $ 0.60 $ 2.37 Diluted EPS (1) $ 0.57 $ 0.61 $ 0.58 $ 0.59 $ 2.35 (1) The sum of the quarterly basic and diluted EPS for each of the four quarters may not equal the EPS for the year due to rounding.

Business Description and Summ40

Business Description and Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) shares in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Leasehold for land lease terms, maximum years	99 years
Total amount of shares repurchased during period	$ 460,000,000	$ 248,300,000	$ 179,000,000
Amount of Deferred Costs Related to Long-term Contracts	$ 137,400,000	$ 98,200,000
Dilutive effect of shares issuable under stock-based compensation plans	4.2	4.4	5.7
Stock Compensation Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	0.1	0.1	0.1
Common Class A [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Repurchase of common stock authorized amount maximum	$ 2,000,000,000
Accumulated shares repurchased	41.2
Accumulated shares repurchased, value	$ 1,562,400,000
Total shares repurchased during period	6	3.8	4.1
Total amount of shares repurchased during period	$ 376,000,000	$ 188,200,000	$ 131,600,000
Common Class A [Member] | Share Repurchase Program, Stock-based Compensation Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares repurchased during period	1.3	1.2	1.2
Total amount of shares repurchased during period	$ 84,000,000	$ 60,100,000	$ 47,400,000

Business Combinations (Narrativ

Business Combinations (Narrative) (Details) $ in Millions	Nov. 20, 2014USD ($)	Dec. 31, 2015USD ($)business	Dec. 31, 2014USD ($)business	Dec. 31, 2013USD ($)business
Business Acquisition [Line Items]
Total initial consideration, net of cash acquired		$ 1.7	$ 2,691.4	$ 193.8
TriZetto [Member]
Business Acquisition [Line Items]
Consideration transferred	$ 2,627.8
Cash acquired	$ 170.5
Total initial consideration, net of cash acquired			$ 2,627.8
Other acquisitions [Member]
Business Acquisition [Line Items]
Number of business combinations | business		0	3	4
Total initial consideration, net of cash acquired			$ 46.2	$ 184.2

Business Combinations (Fair Val

Business Combinations (Fair Value of Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Nov. 20, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Goodwill	$ 2,404.7	$ 2,413.6		$ 444.2
TriZetto [Member]
Business Acquisition [Line Items]
Cash			$ 170.5
Trade accounts receivable			83.1
Unbilled accounts receivable			32.5
Other current assets			11.2
Property and equipment			124
Identifiable intangible assets			849
Other noncurrent assets			14.8
Accounts payable			(12.5)
Deferred revenue			(48.3)
Accrued expenses and other current liabilities			(118.3)
Other noncurrent liabilities			(54.8)
Deferred income tax liabilities, net			(209)
Goodwill			1,956.1
Total purchase price			$ 2,798.3

Business Combinations (Schedule

Business Combinations (Schedule Intangible Assets Acquired) (Details) - USD ($) $ in Millions	Nov. 20, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Total initial consideration, net of cash acquired		$ 1.7	$ 2,691.4	$ 193.8
Goodwill		$ 2,404.7	2,413.6	444.2
TriZetto [Member]
Business Acquisition [Line Items]
Total initial consideration, net of cash acquired			2,627.8
Goodwill	$ 1,956.1
Intangible assets acquired	849
TriZetto [Member] | Trademarks [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 21
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	16 years 10 months 24 days
TriZetto [Member] | Technology [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 328
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years 8 months 12 days
TriZetto [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 437
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	15 years 9 months 18 days
TriZetto [Member] | Trademarks [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 63
Other acquisitions [Member]
Business Acquisition [Line Items]
Total initial consideration, net of cash acquired			46.2	184.2
Goodwill			30.9	129.9
Other acquisitions [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets acquired			12.1	58.6
Other acquisitions [Member] | Other Intangible Assets [Member]
Business Acquisition [Line Items]
Intangible assets acquired			$ 4.3	$ 7.2
Other acquisitions [Member] | Minimum [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life			3 years	5 years
Other acquisitions [Member] | Minimum [Member] | Other Intangible Assets [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life			1 year	1 year
Other acquisitions [Member] | Maximum [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life			10 years	10 years
Other acquisitions [Member] | Maximum [Member] | Other Intangible Assets [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life			4 years	5 years

Business Combinations (Pro Form

Business Combinations (Pro Forma Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Transaction Related Professional Service Costs [Member]
Business Acquisition [Line Items]
Selling, general and administrative expenses	$ 40.6
Other Costs Incurred [Member]
Business Acquisition [Line Items]
Selling, general and administrative expenses	94.3
TriZetto [Member]
Business Acquisition [Line Items]
Revenues	10,893	$ 9,519.6
Income from operations	$ 1,959.5	$ 1,253.2

Business Combinations (Suppleme

Business Combinations (Supplemental Noncash Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Cash paid	$ (1.7)	$ (2,691.4)	$ (193.8)
TriZetto [Member]
Business Acquisition [Line Items]
Fair value of assets acquired		3,070.7
Cash paid		(2,627.8)
Liabilities assumed		$ 442.9

Short-term Investments (Short-t

Short-term Investments (Short-term Investments) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale investment securities	$ 2,014.8	$ 1,262.7
Time deposits	809.5	501.9
Short-term Investments, Total	2,824.3	1,764.6
U.S. Treasury And Agency Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale investment securities	527.1	544.7
Corporate And Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale investment securities	360.5	358.6
Commercial Paper and Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale investment securities	754	4.6
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale investment securities	229.6	220.1
Municipal Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale investment securities	121.3	112.8
Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale investment securities	$ 22.3	$ 21.9

Short-term Investments (Amortiz

Short-term Investments (Amortized Cost, Gross Unrealized Gains And Losses And Fair Value Of Investment Securities Available-For-Sale) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 2,021.6	$ 1,265.1
Unrealized gains	0.6	1.5
Unrealized losses	(7.4)	(3.9)
Fair Value	2,014.8	1,262.7
U.S. Treasury And Agency Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	528.9	544.7
Unrealized gains	0	0.4
Unrealized losses	(1.8)	(0.4)
Fair Value	527.1	544.7
Corporate And Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	361.9	359
Unrealized gains	0.1	0.3
Unrealized losses	(1.5)	(0.7)
Fair Value	360.5	358.6
Commercial Paper and Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	754	4.6
Unrealized gains	0.1	0
Unrealized losses	(0.1)	0
Fair Value	754	4.6
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	230.3	220.4
Unrealized gains	0.1	0.1
Unrealized losses	(0.8)	(0.4)
Fair Value	229.6	220.1
Municipal Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	121.2	112.5
Unrealized gains	0.2	0.4
Unrealized losses	(0.1)	(0.1)
Fair Value	121.3	112.8
Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	25.3	23.9
Unrealized gains	0.1	0.3
Unrealized losses	(3.1)	(2.3)
Fair Value	$ 22.3	$ 21.9

Short-term Investments (Availab

Short-term Investments (Available-For-Sale Securities In A Continuous Unrealized Loss Position) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	$ 1,318.2	$ 670.2
Unrealized losses, less than 12 months	(4.2)	(1.5)
Fair value, 12 months or more	35.6	23.5
Unrealized losses, 12 months or more	(3.2)	(2.4)
Total fair value	1,353.8	693.7
Total unrealized losses	(7.4)	(3.9)
U.S. Treasury And Agency Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	475.7	256.9
Unrealized losses, less than 12 months	(1.8)	(0.4)
Fair value, 12 months or more	0	0
Unrealized losses, 12 months or more	0	0
Total fair value	475.7	256.9
Total unrealized losses	(1.8)	(0.4)
Corporate And Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	315.1	229.7
Unrealized losses, less than 12 months	(1.5)	(0.7)
Fair value, 12 months or more	3.1	0
Unrealized losses, 12 months or more	0	0
Total fair value	318.2	229.7
Total unrealized losses	(1.5)	(0.7)
Commercial Paper and Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	271.5	3.7
Unrealized losses, less than 12 months	(0.1)	0
Fair value, 12 months or more	0	0
Unrealized losses, 12 months or more	0	0
Total fair value	271.5	3.7
Total unrealized losses	(0.1)	0
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	199.4	151.9
Unrealized losses, less than 12 months	(0.7)	(0.3)
Fair value, 12 months or more	11.4	2.8
Unrealized losses, 12 months or more	(0.1)	(0.1)
Total fair value	210.8	154.7
Total unrealized losses	(0.8)	(0.4)
Municipal Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	56.5	28
Unrealized losses, less than 12 months	(0.1)	(0.1)
Fair value, 12 months or more	0	0
Unrealized losses, 12 months or more	0	0
Total fair value	56.5	28
Total unrealized losses	(0.1)	(0.1)
Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	0	0
Unrealized losses, less than 12 months	0	0
Fair value, 12 months or more	21.1	20.7
Unrealized losses, 12 months or more	(3.1)	(2.3)
Total fair value	21.1	20.7
Total unrealized losses	$ (3.1)	$ (2.3)

Short-term Investments (Contrac

Short-term Investments (Contractual Maturities Of Investments In Debt Securities Available-For-Sale) (Details) $ in Millions	Dec. 31, 2015USD ($)
Amortized Cost
Due within one year	$ 806.4
Due after one year up to two years	536.6
Due after two years up to three years	404.9
Due after three years up to four years	18.1
Asset-backed securities	230.3
Amortized Cost	1,996.3
Fair Value
Due within one year	806.5
Due after one year up to two years	535.1
Due after two years up to three years	403.3
Due after three years up to four years	18
Asset-backed securities	229.6
Fair Value	$ 1,992.5

Short-term Investments (Gross G

Short-term Investments (Gross Gains (Losses) Realized On Sales, Maturities And Other Securities Transactions Related To Investment Securities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Investments [Abstract]
Proceeds from sales of available-for-sale investment securities	$ 781.9	$ 1,475.6	$ 1,119.8
Gross gains	1.4	2.2	2
Gross losses	(0.5)	(0.4)	(0.6)
Net realized gains on sales of available-for-sale investment securities	$ 0.9	$ 1.8	$ 1.4

Property and Equipment, Net (Na

Property and Equipment, Net (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Depreciation and amortization expense	$ 86.8	$ 82.5	$ 82.8	$ 73.1	$ 60.8	$ 47.7	$ 46.7	$ 44.5	$ 325.2	$ 199.7	$ 172.2
Capital Leased Assets, Gross	$ 45.9				$ 37				$ 45.9	37
Leasehold for land lease terms, maximum years									99 years
Property, Plant and Equipment [Member]
Depreciation and amortization expense									$ 233.1	$ 172.1	$ 155.7

Property and Equipment, Net (Sc

Property and Equipment, Net (Schedule Of Property And Equipment, Net) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 2,350.5	$ 2,099.3
Accumulated depreciation and amortization	(1,079.1)	(852.1)
Property and Equipment, net	$ 1,271.4	1,247.2	$ 1,081.2
Buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	30 years
Property and Equipment, gross	$ 804.9	605
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	3 years
Property and Equipment, gross	$ 696.9	537.3
Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 384.5	322.6
Furniture and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	5 years
Furniture and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	9 years
Land [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 22.6	22.6
Leasehold Land [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	63.4	60.1
Capital Work-in-Progress [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	114.9	304.7
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 263.3	$ 247

Goodwill and Intangible Asset53

Goodwill and Intangible Assets, net (Schedule Of Goodwill Allocation By Reportable Segments) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 2,413.6	$ 444.2
Additions	5.5	1,987
Foreign currency translation adjustments	(14.4)	(17.6)
Goodwill, Ending Balance	2,404.7	2,413.6
Financial Services [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	204.5	208.6
Additions	5.5	4
Foreign currency translation adjustments	(7.3)	(8.1)
Goodwill, Ending Balance	202.7	204.5
Healthcare [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	2,079.9	107.4
Additions	0	1,976.9
Foreign currency translation adjustments	(3.5)	(4.4)
Goodwill, Ending Balance	2,076.4	2,079.9
Manufacturing/Retail/Logistics [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	69.2	71.6
Additions	0	0.7
Foreign currency translation adjustments	(2.3)	(3.1)
Goodwill, Ending Balance	66.9	69.2
Other [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	60	56.6
Additions	0	5.4
Foreign currency translation adjustments	(1.3)	(2)
Goodwill, Ending Balance	$ 58.7	$ 60

Goodwill and Intangible Asset54

Goodwill and Intangible Assets, net (Schedule Of Components For Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ (226.2)	$ (131.6)
Intangible assets, net	864.3	953.7
Intangible Assets, Gross (Excluding Goodwill)	1,090.5	1,085.3
Indefinite life trademarks	63	63
Amortization of intangibles	96.9	36	$ 24.2
Amortization Expense Recorded As A Reduction Of Revenues	4.8	8.4	$ 7.7
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	650.3	644.4
Accumulated amortization	(157.6)	(112.2)
Net carrying amount	492.7	532.2
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	332.1	332.1
Accumulated amortization	(52.5)	(8.7)
Net carrying amount	279.6	323.4
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	45.1	45.8
Accumulated amortization	(16.1)	(10.7)
Net carrying amount	$ 29	$ 35.1

Goodwill and Intangible Asset55

Goodwill and Intangible Assets, net (Schedule Of Estimated Amortization Expense) (Details) $ in Millions	Dec. 31, 2015USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,016	$ 96.1
2,017	93.2
2,018	85.8
2,019	83.5
2,020	$ 76.3

Accrued Expenses and Other Cu56

Accrued Expenses and Other Current Liabilities (Accrued Expenses And Other Current Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Accrued Expenses And Other Current Liabilities [Abstract]
Compensation and benefits	$ 1,272	$ 906.8
Income taxes	17.1	23.8
Professional fees	69.6	82.7
Travel and entertainment	29.8	35
Customer volume incentives	236.1	192.1
Derivative financial instruments	10.9	97.3
Other	182.9	184.6
Accrued expenses and other current liabilities	$ 1,818.4	$ 1,522.3

Debt (Details)

Debt (Details)	12 Months Ended
	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Nov. 20, 2014USD ($)
Term Loan and Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum debt to equity ratio under covenants	0.40
Deferred financing costs, gross	$ 6,000,000
Deferred financing costs, net, noncurrent	$ 4,400,000	$ 5,700,000
Term Loan and Revolving Credit Facility [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.00%
Term Loan and Revolving Credit Facility [Member] | Minimum [Member] | Eurocurrency [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.75%
Term Loan and Revolving Credit Facility [Member] | Minimum [Member] | Eurocurrency Without Debt Ratings [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.875%
Term Loan and Revolving Credit Facility [Member] | Maximum [Member] | Eurocurrency [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.125%
Term Loan and Revolving Credit Facility [Member] | Maximum [Member] | Eurocurrency Without Debt Ratings [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Term Loan [Member]
Debt Instrument [Line Items]
Principal amount of debt			$ 1,000,000,000
Interest rate at period end	1.40%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity			$ 750,000,000
Notes drawn under Revolving Facility	$ 350,000,000	$ 650,000,000
Interest rate at period end	1.42%

Debt (Short-Term Debt (Details)

Debt (Short-Term Debt (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Short-term Debt [Line Items]
Total short-term debt	$ 406.3	$ 700
Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Notes drawn under Revolving Facility	350	650
Term Loan [Member]
Short-term Debt [Line Items]
Term Loan - Current Maturities	$ 56.3	$ 50

Debt (Long-Term Debt) (Details)

Debt (Long-Term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Long-term debt	$ 937.5
Long-term debt, net of current maturities	881.2	$ 937.5
Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt	937.5	987.5
Less: Current portion	(56.3)	(50)
Long-term debt, net of current maturities	$ 881.2	$ 937.5

Debt (Debt Maturities) (Details

Debt (Debt Maturities) (Details) $ in Millions	Dec. 31, 2015USD ($)
Debt Disclosure [Abstract]
2,016	$ 56.3
2,017	81.2
2,018	100
2,019	700
Long-term debt	$ 937.5

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Deferred income taxes related to MAT	$ 252.3	$ 218.5
Minimum alternative tax, expiration period (in years)	10 years
Incentive period for SEZs, years	15 years
Regular corporate income tax rate in India	34.60%
Minimum alternative tax, rate	21.30%
Income tax holiday, increase in net income	$ 201.4	$ 183	$ 146.3
Increase in diluted EPS	$ 0.33	$ 0.30	$ 0.24
Unrepatriated foreign earnings	$ 7,495
Accrued interest and penalties	11.3	$ 11.2
India
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrepatriated foreign earnings	6,671
Foreign Tax Authority [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Net operating loss carryforward	6.1
Internal Revenue Service (IRS) [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Net operating loss carryforward	$ 8.5

Income Taxes (Schedule Of Incom

Income Taxes (Schedule Of Income Before Provision For Income Tax) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
United States	$ 738.5	$ 589.2	$ 540.7
Foreign	1,425.1	1,334.8	1,147.2
Income before provision for income taxes	$ 2,163.6	$ 1,924	$ 1,687.9

Income Taxes (Schedule Of Compo

Income Taxes (Schedule Of Components Of Provision For Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal and state	$ 351.8	$ 260.2	$ 270
Foreign	314.3	324.1	277.5
Total current	666.1	584.3	547.5
Deferred:
Federal and state	(58.1)	(20.2)	(37.1)
Foreign	(68)	(79.4)	(51.1)
Total deferred	(126.1)	(99.6)	(88.2)
Total provision for income taxes	$ 540	$ 484.7	$ 459.3

Income Taxes (Reconciliation Be

Income Taxes (Reconciliation Between Effective Income Tax Rate And U.S. Federal Statutory Rate) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Tax expense, at U.S. federal statutory rate, amount	$ 757.3	$ 673.4	$ 590.8
State and local income taxes, net of federal benefit, amount	42.4	34.5	33.1
Non-taxable income for Indian tax purposes, amount	(201.4)	(183)	(146.3)
Rate differential on foreign earnings, amount	(34)	(31.8)	(24.6)
Other, amount	(24.3)	(8.4)	6.3
Total provision for income taxes	$ 540	$ 484.7	$ 459.3
Tax expense, at U.S. federal statutory rate, percentage	35.00%	35.00%	35.00%
State and local income taxes, net of federal benefit, percentage	2.00%	1.80%	2.00%
Non-taxable income for Indian tax purposes, percentage	(9.30%)	(9.50%)	(8.70%)
Rate differential on foreign earnings, percentage	(1.60%)	(1.70%)	(1.50%)
Other, percentage	(1.10%)	(0.40%)	0.40%
Total provision for income taxes, percentage	25.00%	25.20%	27.20%

Income Taxes (Schedule Of Defer

Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Deferred income tax assets:
Net operating losses	$ 5.9	$ 10
Revenue recognition	72.1	56.5
Compensation and benefits	194	145.6
Stock-based compensation	26.1	22.5
Minimum alternative tax (MAT) and other credits	219.1	184.2
Other accrued expenses	110.6	101.7
Other	2.9	15.1
Deferred income tax assets, gross	630.7	535.6
Less valuation allowance	(10.4)	(11.4)
Deferred income tax assets, net	620.3	524.2
Deferred income tax liabilities:
Depreciation and amortization	23.9	21.2
Intangible assets	251.9	280.6
Deferred income tax liabilities	275.8	301.8
Net deferred income tax assets	$ 344.5	$ 222.4

Income Taxes (Summary Of Change

Income Taxes (Summary Of Changes In Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Changes in unrecognized income tax benefits
Balance, beginning of year	$ 135.6	$ 96.6
Additions based on tax positions related to the current year	20.7	7.8
Additions for tax positions of prior years	6.5	5.9
Additions for tax positions of acquired subsidiaries	0	29.2
Reductions for tax positions due to lapse of statutes of limitations	(23.1)	0
Reductions for tax positions of prior years	0	0
Settlements	0	0
Foreign currency exchange movement	(1)	(3.9)
Balance, end of year	$ 138.7	$ 135.6

Derivative Financial Instrume67

Derivative Financial Instruments (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Cash flow hedge losses expected to be reclassified to earnings within the next 12 months	$ 2
Cash flow hedge ineffectiveness is immaterial	Hedge ineffectiveness was immaterial for all periods presented.

Derivative Financial Instrume68

Derivative Financial Instruments (Location And Fair Values Of Derivative Financial Instruments In Our Consolidated Statement Of Financial Position) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Derivative assets fair value	$ 9.2	$ 6.6
Derivative liabilities fair value	24.4	107.3
Cash Flow Hedges [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	8.8	4.6
Derivative liabilities fair value	23.2	107.2
Cash Flow Hedges [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Forward Contracts [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	7.2	0.7
Cash Flow Hedges [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Forward Contracts [Member] | Other Noncurrent Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	1.6	3.9
Cash Flow Hedges [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Forward Contracts [Member] | Accrued Expenses And Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities fair value	9.7	97.2
Cash Flow Hedges [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Forward Contracts [Member] | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities fair value	13.5	10
Other Derivatives [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	0.4	2
Derivative liabilities fair value	1.2	0.1
Other Derivatives [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward Contracts [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets fair value	0.4	2
Other Derivatives [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward Contracts [Member] | Accrued Expenses And Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities fair value	$ 1.2	$ 0.1

Derivative Financial Instrume69

Derivative Financial Instruments (Notional Value Of Outstanding Cash Flow Hedge Contracts By Year Of Maturity And Net Unrealized (Loss) Gain Included In Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivative [Line Items]
Net unrealized (loss) included in accumulated other comprehensive income (loss), net of taxes	$ (11.7)	$ (86.7)	$ (300)	$ (252.8)
Cash Flow Hedges [Member] | Foreign Exchange Forward Contracts [Member]
Derivative [Line Items]
Derivative, notional amount	2,445	2,460
Net unrealized (loss) included in accumulated other comprehensive income (loss), net of taxes	(11.7)	(86.7)
Cash Flow Hedges [Member] | Foreign Exchange Forward, Maturity 2015 [Member]
Derivative [Line Items]
Derivative, notional amount	0	1,320
Cash Flow Hedges [Member] | Foreign Exchange Forward, Maturity 2016 [Member]
Derivative [Line Items]
Derivative, notional amount	1,215	720
Cash Flow Hedges [Member] | Foreign Exchange Forward, Maturity 2017 [Member]
Derivative [Line Items]
Derivative, notional amount	900	420
Cash Flow Hedges [Member] | Foreign Exchange Forward, Maturity 2018 [Member] [Member]
Derivative [Line Items]
Derivative, notional amount	$ 330	$ 0

Derivative Financial Instrume70

Derivative Financial Instruments (Location And Amounts Of Pre-Tax Gains (Losses) On Cash Flow Hedge Derivatives Financial Instruments) (Details) - Cash Flow Hedges [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Net (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	$ (71.2)	$ (136.6)
Cost Of Revenues [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	(59.3)	(113.4)
Selling, General and Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (effective portion)	(11.9)	(23.2)
Foreign Exchange Forward Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Increase) Decrease in Derivative Losses Recognized in Accumulated Other Comprehensive Income (Loss) (effective portion)	$ 17	$ 115.7

Derivative Financial Instrume71

Derivative Financial Instruments (Additional Information Related To Outstanding Contracts Not Designated As Hedging Instruments) (Details) - Not Designated as Hedging Instrument [Member] - Foreign Exchange Forward Contracts [Member] - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Derivative, notional amount	$ 165.5	$ 215.6
Market value	(0.8)	1.9
Indian Rupees
Derivative [Line Items]
Derivative, notional amount	150.7	160
Market value	(0.6)	1.8
Euros
Derivative [Line Items]
Derivative, notional amount	5.3	24.4
Market value	(0.1)	0.2
British Pounds
Derivative [Line Items]
Derivative, notional amount	0	17.9
Market value	0	0
Australia, Dollars
Derivative [Line Items]
Derivative, notional amount	8.2	9.6
Market value	(0.1)	(0.1)
Canada, Dollars
Derivative [Line Items]
Derivative, notional amount	1.3	3.7
Market value	$ 0	$ 0

Derivative Financial Instrume72

Derivative Financial Instruments (Location And Amounts Of Pre-Tax Gains (Losses) On Derivative Financial Instruments Not Designated As Hedges) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Not Designated as Hedging Instrument [Member] | Foreign Exchange Forward Contracts [Member] | Foreign Currency Gain (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of net gains (losses) on derivative instruments	$ 0.3	$ (3.9)

Fair Value Measurements (Financ

Fair Value Measurements (Financial Assets And (Liabilities) Measured At Fair Value On A Recurring Basis) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	$ 495.9	$ 183.9
Time deposits	809.5	501.9
Available-for-sale investment securities	2,014.8	1,262.7
Investments	2,824.3	1,764.6
Total	3,305	1,847.8
Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	7.6	2.7
Accrued Expenses And Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, liabilities	(10.9)	(97.3)
Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	1.6	3.9
Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, liabilities	(13.5)	(10)
U.S. Treasury And Agency Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	527.1	544.7
Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	360.5	358.6
Commercial Paper and Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	754	4.6
Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	229.6	220.1
Municipal Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	121.3	112.8
Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	22.3	21.9
Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	495.9	176.5
Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents		7.4
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	495.9	176.5
Time deposits	0	0
Available-for-sale investment securities	463.7	426.8
Investments	463.7	426.8
Total	959.6	603.3
Level 1 [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	0	0
Level 1 [Member] | Accrued Expenses And Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, liabilities	0	0
Level 1 [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	0	0
Level 1 [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, liabilities	0	0
Level 1 [Member] | U.S. Treasury And Agency Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	463.7	426.8
Level 1 [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Level 1 [Member] | Commercial Paper and Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Level 1 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Level 1 [Member] | Municipal Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Level 1 [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Level 1 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	495.9	176.5
Level 1 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents		0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	0	7.4
Time deposits	809.5	501.9
Available-for-sale investment securities	1,551.1	835.9
Investments	2,360.6	1,337.8
Total	2,345.4	1,244.5
Level 2 [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	7.6	2.7
Level 2 [Member] | Accrued Expenses And Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, liabilities	(10.9)	(97.3)
Level 2 [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	1.6	3.9
Level 2 [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, liabilities	(13.5)	(10)
Level 2 [Member] | U.S. Treasury And Agency Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	63.4	117.9
Level 2 [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	360.5	358.6
Level 2 [Member] | Commercial Paper and Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	754	4.6
Level 2 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	229.6	220.1
Level 2 [Member] | Municipal Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	121.3	112.8
Level 2 [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	22.3	21.9
Level 2 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	0	0
Level 2 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents		7.4
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	0	0
Time deposits	0	0
Available-for-sale investment securities	0	0
Investments	0	0
Total	0	0
Level 3 [Member] | Other Current Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	0	0
Level 3 [Member] | Accrued Expenses And Other Current Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, liabilities	0	0
Level 3 [Member] | Other Noncurrent Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, assets	0	0
Level 3 [Member] | Other Noncurrent Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments, liabilities	0	0
Level 3 [Member] | U.S. Treasury And Agency Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Level 3 [Member] | Corporate And Other Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Level 3 [Member] | Commercial Paper and Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Level 3 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Level 3 [Member] | Municipal Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Level 3 [Member] | Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities	0	0
Level 3 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	$ 0	0
Level 3 [Member] | Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents		$ 0

Accumulated Other Comprehensi74

Accumulated Other Comprehensive Income (Loss) (Schedule Of Changes In Accumulated Other Comprehensive Income (Loss) By Component) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Foreign Currency Translation Adjustment, Before Taxes [Roll Forward]
Foreign currency translation adjustments, beginning balance, before tax	$ (34.8)	$ 24	$ 11.5
Change in foreign currency translation, before tax	(55.1)	(58.8)	12.5
Foreign currency translation adjustments, ending balance, before tax	(89.9)	(34.8)	24
Foreign Currency Translation Adjustment, Tax [Roll Forward]
Foreign currency translation adjustment, beginning balance, tax	0	0	0
Change in foreign currency translation, tax	0	0	0
Foreign currency translation adjustment, ending balance, tax	0	0	0
Foreign Currency Translation Adjustment, Net of Tax [Roll Forward]
Foreign currency translation adjustments, beginning balance, net of tax	(34.8)	24	11.5
Change in foreign currency translation, net of tax	(55.1)	(58.8)	12.5
Foreign currency translation adjustments, ending balance, net of tax	(89.9)	(34.8)	24
Available-for-sale Securities Adjustment, Before Taxes [Roll Forward]
Unrealized gains (losses) on available-for-sale investment securities, beginning balance, before tax	(2.4)	(0.5)	2.5
Unrealized (losses) gains arising on available-for-sale investment securities during the period, before tax	(3.5)	(0.1)	(1.7)
Reclassification of (gains) to other, net on available-for-sale investment securities, before tax	(0.9)	(1.8)	(1.3)
Net change on available-for-sale investment securities, before tax	(4.4)	(1.9)	(3)
Unrealized gains (losses) on available-for-sale investment securities, ending balance, before tax	(6.8)	(2.4)	(0.5)
Available-for-sale Securities Adjustment, Tax [Roll Forward]
Unrealized gains (losses) on available-for-sale investment securities, beginning balance, tax	0.8	0.2	(0.9)
Unrealized (losses) gains arising on available-for-sale investment securities during the period, tax	0.8	0	0.6
Reclassification of (gains) to other, net on available-for-sale investment securities, tax	0.6	0.6	0.5
Net change on available-for-sale investment securities, tax	1.4	0.6	1.1
Unrealized gains (losses) on available-for-sale investment securities, ending balance, tax	2.2	0.8	0.2
Available-for-sale Securities Adjustment, Net of Tax [Roll Forward]
Unrealized gains (losses) on available-for-sale investment securities, beginning balance, net of tax	(1.6)	(0.3)	1.6
Unrealized (losses) gains arising on available-for-sale investment securities during the period, net of tax	(2.7)	(0.1)	(1.1)
Reclassification of (gains) to other, net on available-for-sale investment securities, net of tax	(0.3)	(1.2)	(0.8)
Net change on available-for-sale investment securities, net of tax	(3)	(1.3)	(1.9)
Unrealized gains (losses) on available-for-sale investment securities, ending balance, net of tax	(4.6)	(1.6)	(0.3)
Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Before Taxes [Roll Forward]
Unrealized (losses) on cash flow hedges, beginning balance, before tax	(102.6)	(354.9)	(296.6)
Unrealized (losses) arising on cash flow hedges during the period, before tax	17	115.7	(221.3)
Net change on cash flow hedges, before tax	88.2	252.3	(58.3)
Unrealized (losses) on cash flow hedges, ending balance, before tax	(14.4)	(102.6)	(354.9)
Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Tax [Roll Forward]
Unrealized (losses) on cash flow hedges, beginning balance, tax	15.9	54.9	43.8
Unrealized (losses) arising on cash flow hedges during the period, tax	(0.3)	(17.9)	36.2
Net change on cash flow hedges, tax	(13.2)	(39)	11.1
Unrealized (losses) on cash flow hedges, ending balance, tax	2.7	15.9	54.9
Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax [Roll Forward]
Unrealized (losses) on cash flow hedges, beginning balance, net of tax	(86.7)	(300)	(252.8)
Unrealized (losses) arising on cash flow hedges during the period, net of tax	16.7	97.8	(185.1)
Net change on cash flow hedges, net of tax	75	213.3	(47.2)
Unrealized (losses) on cash flow hedges, ending balance, net of tax	(11.7)	(86.7)	(300)
Accumulated Other Comprehensive Income (Loss), Before Taxes [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance, before tax	(139.8)	(331.4)	(282.6)
Other comprehensive income loss, before tax	28.7	191.6	(48.8)
Accumulated other comprehensive income (loss), ending balance, before tax	(111.1)	(139.8)	(331.4)
Accumulated Other Comprehensive Income (Loss), Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance, tax	16.7	55.1	42.9
Other comprehensive income loss, tax	(11.8)	(38.4)	12.2
Accumulated other comprehensive income (loss), ending balance, tax	4.9	16.7	55.1
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning balance, net of tax	(123.1)	(276.3)	(239.7)
Other comprehensive income (loss)	16.9	153.2	(36.6)
Accumulated other comprehensive income (loss), ending balance, net of tax	(106.2)	(123.1)	(276.3)
Cost Of Revenues [Member]
Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Before Taxes [Roll Forward]
Reclassifications of losses on cash flow hedges, before tax	59.3	113.4	135
Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Tax [Roll Forward]
Reclassification of losses on cash flow hedges, tax	(10.8)	(17.5)	(20.8)
Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax [Roll Forward]
Reclassification of losses on cash flow hedges, net of tax	48.5	95.9	114.2
Selling, General and Administrative Expenses [Member]
Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Before Taxes [Roll Forward]
Reclassifications of losses on cash flow hedges, before tax	11.9	23.2	28
Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Tax [Roll Forward]
Reclassification of losses on cash flow hedges, tax	(2.1)	(3.6)	(4.3)
Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax [Roll Forward]
Reclassification of losses on cash flow hedges, net of tax	$ 9.8	$ 19.6	$ 23.7

Commitments and Contingencies75

Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Rent expense	$ 212.3	$ 190.9	$ 166.2
Outstanding fixed capital commitments related to our India development center expansion program	$ 76.4

Commitments and Contingencies76

Commitments and Contingencies (Operating Leases) (Details) $ in Millions	Dec. 31, 2015USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,016	$ 134.2
2,017	117.4
2,018	95.6
2,019	86.2
2,020	68.4
Thereafter	164.9
Total minimum lease payments	$ 666.7

Commitments and Contingencies77

Commitments and Contingencies (Capital Leases) (Details) $ in Millions	Dec. 31, 2015USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,016	$ 5.4
2,017	4.9
2,018	4.8
2,019	4.3
2,020	3.9
Thereafter	31.5
Total minimum lease payments	54.8
Interest	(14.6)
Present value of minimum lease payments	$ 40.2

Employee Benefits (Narrative) (

Employee Benefits (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Gratuity Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Amount accrued under gratuity plan net of fund assets	$ 98.2	$ 90.8
Fund assets	77.6	66.7
Pension and Other Postretirement Benefit Expense	30	36.4	$ 31
United States and Europe [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan expense	62	45.1	34.6
India
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan expense	$ 71.4	$ 63.4	$ 56.1
Employee contribution percentage, maximum	12.00%

Stock-Based Compensation Plan79

Stock-Based Compensation Plans (Narrative) (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Jun. 05, 2009
2009 Incentive Plan [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Shares authorized				48
Shares available for grant	12.9
Stock Options [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting period	4 years
Unrecognized stock-based compensation expense	$ 0.8
Weighted average remaining requisite service period	1 year
Total intrinsic value of options exercised	$ 58.5	$ 58.3	$ 137.4
Performance Stock Units [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Unrecognized stock-based compensation expense	$ 55
Weighted average remaining requisite service period	1 year 9 months 29 days
Employee Stock [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Shares authorized	28
Shares available for grant	8.2
Vesting period	3 months
Eligible employees purchase percentage of whole share of fair market value	90.00%
Shares issued	2.1
Fair value of shares issued	$ 19.2
Restricted Stock Units [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Unrecognized stock-based compensation expense	$ 219.1
Weighted average remaining requisite service period	2 years 4 days
Non-Employee Directors [Member] | Stock Options [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting period	2 years
Minimum [Member] | Stock Options [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Life of share-based payment award	7 years
Minimum [Member] | Performance Stock Units [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting period	1 year
Minimum [Member] | Restricted Stock Units [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting period	3 years
Maximum [Member] | Stock Options [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Life of share-based payment award	10 years
Maximum [Member] | Performance Stock Units [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting period	3 years
Maximum [Member] | Restricted Stock Units [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting period	4 years

Stock-Based Compensation Plan80

Stock-Based Compensation Plans (Schedule Of Allocation Of Total Stock-Based Compensation Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 192	$ 134.8	$ 118.8
Income tax benefit	46.2	31.4	29.4
Cost Of Revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	39.5	26.8	19.1
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 152.5	$ 108	$ 99.7

Stock-Based Compensation Plan81

Stock-Based Compensation Plans (Schedule Of Assumptions Used To Calculate The Fair Value Of Option Grants) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Dividend yield	0.00%	0.00%	0.00%
Stock Options [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Weighted average volatility factor	28.11%	28.74%	33.47%
Weighted average expected life (in years)	4 years 3 months 15 days	3 years 11 months 1 day	3 years 9 months 26 days
Weighted average risk-free interest rate	1.41%	1.25%	0.73%
Weighted average grant date fair value	$ 16.53	$ 11.81	$ 8.65
Employee Stock [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Weighted average volatility factor	25.78%	24.86%	29.17%
Weighted average expected life (in years)	3 months	3 months	3 months
Weighted average risk-free interest rate	0.12%	0.02%	0.05%
Weighted average grant date fair value	$ 9.04	$ 7.29	$ 5.87

Stock-Based Compensation Plan82

Stock-Based Compensation Plans (Summary Of The Activity For Stock Options) (Details) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2015USD ($)$ / sharesshares
Number of Options
Number of Options, Outstanding at beginning of year | shares	5.4
Number of Options, Granted | shares	0.1
Number of Options, Exercised | shares	(1.3)
Number of Options, Cancelled | shares	0
Number of Options, Expired | shares	0
Number of Options, Outstanding at end of period | shares	4.2
Number of Options, Vested and expected to vest at end of year | shares	4.2
Number of Options, Exercisable at end of year | shares	4.1
Weighted Average Exercise Price (in dollars)
Weighted Average Exercise Price, Outstanding at beginning of year | $ / shares	$ 17.84
Weighted Average Exercise Price, Granted | $ / shares	65.38
Weighted Average Exercise Price, Exercised | $ / shares	15.76
Weighted Average Exercise Price, Cancelled | $ / shares	0
Weighted Average Exercise Price, Expired | $ / shares	0
Weighted Average Exercise Price, Outstanding at end of year | $ / shares	19.09
Weighted Average Exercise Price, Vested and expected to vest at end of year | $ / shares	19.02
Weighted Average Exercise Price, Exercisable at end of year | $ / shares	$ 18.22
Weighted Average Remaining Life, Outstanding at end of year (in years)	1 year 9 months
Weighted Average Remaining Life, Vested and expected to vest at end of year (in years)	1 year 9 months
Weighted Average Remaining Life, Exercisable at end of year (in years)	1 year 7 months 28 days
Aggregate Intrinsic Value, Outstanding at end of year | $	$ 170.8
Aggregate Intrinsic Value, Vested and expected to vest at end of year | $	170.8
Aggregate Intrinsic Value, Exercisable at end of year | $	$ 170.4

Stock-Based Compensation Plan83

Stock-Based Compensation Plans (Summary Of The Activity For Performance Stock Units) (Details) - Performance Stock Units [Member] shares in Millions	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Number of Units
Number of Units, Unvested at beginning of period | shares	3.6
Number of Units, Granted | shares	0.7
Number of Units, Vested | shares	(1.2)
Number of Units, Forfeited | shares	(0.1)
Number of Units, Reduction due to the achievement of lower than maximum performance milestones | shares	(0.5)
Number of Units, Unvested at end of period | shares	2.5
Weighted Average Grant Date Fair Value (in dollars)
Weighted Average Grant Date Fair Value, Unvested at beginning of period | $ / shares	$ 47.42
Weighted Average Grant Date Fair Value, Granted | $ / shares	64.39
Weighted Average Grant Date Fair Value, Vested | $ / shares	37.69
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	47.67
Weighted Average Grant Date Fair Value, Reduction due to the achievement of lower than maximum performance milestones | $ / shares	54.30
Weighted Average Grant Date Fair Value, Unvested at end of period | $ / shares	$ 55.69

Stock-Based Compensation Plan84

Stock-Based Compensation Plans (Summary Of The Activity For Restricted Stock Units) (Details) - Restricted Stock Units [Member] shares in Millions	12 Months Ended
	Dec. 31, 2015$ / sharesshares
Number of Units
Number of Units, Unvested at beginning of period | shares	5.4
Number of Units, Granted | shares	2
Number of Units, Vested | shares	(2.3)
Number of Units, Forfeited | shares	(0.4)
Number of Units, Unvested at end of period | shares	4.7
Weighted Average Grant Date Fair Value (in dollars)
Weighted Average Grant Date Fair Value, Unvested at beginning of period | $ / shares	$ 48.73
Weighted Average Grant Date Fair Value, Granted | $ / shares	63.25
Weighted Average Grant Date Fair Value, Vested | $ / shares	47.15
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	50.97
Weighted Average Grant Date Fair Value, Unvested at end of period | $ / shares	$ 55.50

Segment Information (Narrative)

Segment Information (Narrative) (Details)	12 Months Ended
	Dec. 31, 2015
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Percentage of consolidated revenues and segment operating profit, maximum	10.00%

Segment Information (Revenues F

Segment Information (Revenues From External Customers And Segment Operating Profit) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 3,232.5	$ 3,187	$ 3,085.1	$ 2,911.4	$ 2,742.3	$ 2,581	$ 2,517.1	$ 2,422.3	$ 12,416	$ 10,262.7	$ 8,843.2
Income from operations	$ 553.4	$ 542.8	$ 545.5	$ 500.3	$ 479.4	$ 457.5	$ 488	$ 460	2,142	1,884.9	1,677.9
Financial Services [Member]
Segment Reporting Information [Line Items]
Revenues									5,002.9	4,285.6	3,717.6
Income from operations									1,641.9	1,320.1	1,212.1
Healthcare [Member]
Segment Reporting Information [Line Items]
Revenues									3,667.5	2,689.4	2,264.8
Income from operations									1,200	851	829.9
Manufacturing/Retail/Logistics [Member]
Segment Reporting Information [Line Items]
Revenues									2,343.9	2,093.6	1,868.3
Income from operations									802.7	685.7	630.3
Other [Member]
Segment Reporting Information [Line Items]
Revenues									1,401.7	1,194.1	992.5
Income from operations									453.7	391.9	318.3
Operating Segments [Member]
Segment Reporting Information [Line Items]
Income from operations									4,098.3	3,248.7	2,990.6
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Less: unallocated costs									$ 1,956.3	$ 1,363.8	$ 1,312.7

Segment Information (Revenues A

Segment Information (Revenues And Long-Lived Assets By Geographic Area) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Geographic Areas, Revenues
Revenues	$ 3,232.5	$ 3,187	$ 3,085.1	$ 2,911.4	$ 2,742.3	$ 2,581	$ 2,517.1	$ 2,422.3	$ 12,416	$ 10,262.7	$ 8,843.2
Geographic Areas, Long-Lived Assets
Long-lived assets	1,271.4				1,247.2				1,271.4	1,247.2	1,081.2
North America [Member]
Geographic Areas, Revenues
Revenues									9,759.4	7,879.8	6,860.1
Geographic Areas, Long-Lived Assets
Long-lived assets	242.4				188.3				242.4	188.3	48.4
Europe [Member]
Geographic Areas, Revenues
Revenues									2,008.2	1,883.6	1,579.2
Geographic Areas, Long-Lived Assets
Long-lived assets	32.2				29.8				32.2	29.8	22.7
United Kingdom [Member]
Geographic Areas, Revenues
Revenues									1,188.5	1,099.2	942.6
Rest of World [Member]
Geographic Areas, Revenues
Revenues									648.4	499.3	403.9
Geographic Areas, Long-Lived Assets
Long-lived assets	$ 996.8				$ 1,029.1				$ 996.8	$ 1,029.1	$ 1,010.1

Quarterly Financial Data (Una88

Quarterly Financial Data (Unaudited) (Summary Of Quarterly Financial Data) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Data [Abstract]
Revenues	$ 3,232.5	$ 3,187	$ 3,085.1	$ 2,911.4	$ 2,742.3	$ 2,581	$ 2,517.1	$ 2,422.3	$ 12,416	$ 10,262.7	$ 8,843.2
Cost of revenues (exclusive of depreciation and amortization expense shown separately below)	1,933.6	1,934.6	1,844.8	1,727.2	1,639.4	1,569.8	1,499.5	1,432.4	7,440.2	6,141.1	5,265.5
Selling, general and administrative expenses	658.7	627.1	612	610.8	562.7	506	482.9	485.4	2,508.6	2,037	1,727.6
Depreciation and amortization expense	86.8	82.5	82.8	73.1	60.8	47.7	46.7	44.5	325.2	199.7	172.2
Income from operations	553.4	542.8	545.5	500.3	479.4	457.5	488	460	2,142	1,884.9	1,677.9
Net income	$ 423.4	$ 397.2	$ 420.1	$ 382.9	$ 362.9	$ 355.6	$ 371.9	$ 348.9	$ 1,623.6	$ 1,439.3	$ 1,228.6
Basic earnings per share	$ 0.70	$ 0.65	$ 0.69	$ 0.63	$ 0.60	$ 0.58	$ 0.61	$ 0.57	$ 2.67	$ 2.37	$ 2.03
Diluted earnings per share	$ 0.69	$ 0.65	$ 0.68	$ 0.62	$ 0.59	$ 0.58	$ 0.61	$ 0.57	$ 2.65	$ 2.35	$ 2.02

Valuation And Qualifying Acco89

Valuation And Qualifying Accounts (Valuation And Qualifying Accounts) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts Receivable Allowance For Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 36.9	$ 26.8	$ 25.8
Charged to Costs and Expenses	10.2	4.7	3.6
Charged to Other Accounts	0	6.2	0
Deductions/Other	8.1	0.8	2.6
Balance at End of Period	39	36.9	26.8
Warranty Accrual [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	21.2	17.7	14.8
Charged to Costs and Expenses	27.6	24.9	20.3
Charged to Other Accounts	0	0	0
Deductions/Other	25.1	21.4	17.4
Balance at End of Period	23.7	21.2	17.7
Valuation Allowance - Deferred Income Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	11.4	5.7	6.3
Charged to Costs and Expenses	3.3	0.2	4
Charged to Other Accounts	0	5.6	0
Deductions/Other	4.3	0.1	4.6
Balance at End of Period	$ 10.4	$ 11.4	$ 5.7